Jessica Fischer
Chief Financial Officer at Charter Communications
Thanks, Chris. Before getting started, I want to remind you that we will be making a couple of changes to our reporting beginning next quarter. First, as we noted in our investor meeting in December, we'll include mobile service revenue and residential and SMB revenue as appropriate. We will no longer report mobile expenses separately, and both of these changes better reflects the converged and integrated nature of our mobile business and our operations and our offer structure.
Second, we will provide additional line extension capital and rural disclosures. And finally, I want to note that while our fourth quarter results contains some modest impacts from Hurricane Ian, the overall impact of the Hurricane on our financials and customer numbers was very small and doesn't warrant separate disclosure.
Let's turn to our customer results on Slide 5. Including residential and SMB, we added a 105,000 Internet customers in the fourth quarter, and added 344,000 over the last 12 months. Video customers declined by 144,000 in the fourth quarter. Wireline voice declined by 233,000, and we added a record 615,000 mobile lines. For the full year, we added 1.7 million mobile lines.
Although, our Internet customer growth continued to be positive in the fourth quarter, activity levels remain low. During the quarter, we saw both lower Internet churn and lower Internet connects than in the fourth quarters of 2021, 2020 and 2019. Total churn, voluntary churn and non-pay churn were all lower year-over-year and were at all-time lows for the fourth quarter. Mover churn remains well below pre-pandemic levels, which also reduces our selling opportunities.
Gross additions remained down across the footprint by similar amounts in overbuild and non-overbuild areas, similar to what we've seen in the past few quarters. In terms of competitive impact some of the lower gross additions we see probably relate to DSL conversion going to a new entrant, fixed wireless instead of coming to us. Given the issues with fixed wireless products reliability and scalability. We expect those customers to find their way to us over the long-term. In addition, we've seen a slightly higher pace of fiber overbuild recently. And I would also note that we've seen a small amount of market share return to mobile-only service over the past several quarters, the reversal of some COVID effects. Despite these challenges with lower market activity, our Spectrum One product is working. We remain in the early stages of offering converged packages of products and refinement to our approach continues, but we're very pleased with the results.
Moving to financial results starting on Slide 6. Over the last year, residential customers grew by 0.2% year-over-year. Residential revenue per customer relationship was flat year-over-year, with promotional rate step-ups and rate adjustments, offset by a higher mix of non-video customers and a higher mix of lower-priced video packages within our base. Also keep in mind that our residential revenue and ARPU does not reflect any mobile revenue, although, that will change next quarter when we make the reporting adjustments I discussed a moment ago. In addition, we're allocating a portion of Spectrum One related customer revenue from Internet to mobile revenue under GAAP.
As Slide 6 shows, total residential revenue grew by 0.4% year-over-year. Turning to commercial, SMB revenue grew by 2.4% year-over-year, reflecting SMB customer growth of 3%. Enterprise revenue was up by 4.9% year-over-year and excluding wholesale revenue, enterprise revenue grew by 9.1%. And enterprise PSUs grew by 4.4% year-over-year. Fourth quarter advertising revenue grew by 25% year-over-year, primarily driven by political revenue. Core ad revenue was down by 3% with lower national and local advertising revenue driven by the softening ad market, offset by our growing advanced advertising capabilities.
Mobile revenue totaled $876 million with $401 million of that revenue being device revenue. Other revenue grew by 4.9% year-over-year, mostly driven by higher rural construction initiative subsidies, partly offset by lower processing fees and lower video CPE sold to customers. In total, consolidated fourth quarter revenue was up 3.5% year-over-year and up 4.5% for the full year 2022.
Moving to operating expenses and adjusted EBITDA on Slide 7. In Q4, total operating expenses grew by $359 million or 4.6% year-over-year. Programming costs declined by 3.3% year-over-year due to a decline in video customers year-over-year and a higher mix of lighter video packages, partly offset by higher programming rates. Looking at the full year 2023, we expect programming cost per video customer to be approximately flat year-over-year.
Regulatory, connectivity and produced content declined by 5.3%, primarily driven by lower regulatory and franchise fees and lower video CPE sold to customers. Cost to service customers increased by 5.8% year-over-year, driven by higher labor costs, higher fuel and freight costs and higher bad debt, partly offset by productivity improvements. Excluding bad debt from both years, cost to service customers grew by 4.9% and while bad debt was higher year-over-year, it remained below pre-COVID levels.
As we noted in our December investor meeting, we're making very targeted adjustments to job structure, pay and benefits and career paths inside of our operations teams. In order to build an even higher skilled and more tenured workforce, which drove the higher labor costs. These adjustments will add some pressure year-over-year to cost to service customers expense growth in the first half of this year. But that year-over-year growth should moderate in the second half of 2023.
And we continue to expect additional efficiencies and cost to service customers over time. As a result, the continued digitization of service, productivity improvements and our network evolution investments. Marketing expense grew by 6.9% year-over-year, primarily due to the higher staffing levels I mentioned and wages, which included targeted adjustments in our sales channels.
Mobile expenses totaled $982 million and were comprised of mobile device cost tied to device revenue, customer acquisition and service and operating costs. And other expenses increased by 6.6%, primarily driven by higher labor costs and higher advertising sales expense related to higher political revenue. Adjusted EBITDA grew by 1.9% year-over-year in the quarter and 4.8% for the full year 2022.
Turning to net income on Slide 8. We generated $1.2 billion of net income attributable to Charter's shareholders in the fourth quarter compared to $1.6 billion in the fourth quarter of last year. With higher income tax and interest expense more than offsetting higher adjusted EBITDA.
Turning to Slide 9. Capital expenditures totaled $2.9 billion in the fourth quarter and $9.4 billion for the full year 2022. Our total capex for the year reflects the timing of more accelerated equipment inventory receipts in December than expected. Fourth quarter capital spending of $2.9 billion rose above last year's fourth quarter spend of $2.1 billion, primarily driven by higher line extension spend driven by our rural construction initiative. Capital expenditures excluding line extensions increased from $1.6 billion in last year's fourth quarter to $2 billion this quarter, driven by investment in network evolution, higher customer premise equipment spend on advanced Wi-Fi equipment and timing of spend.
For the full year 2023, we continue to expect capital expenditures excluding line extensions to be between $6.5 billion and $6.8 billion. So excluding line extensions, we expect a small increase year-over-year in capital spend, driven by the acceleration of network evolution spending, and partly offset by declines in other areas. Following the expected completion of our network evolution initiative at the end of 2025 or the beginning of 2026, capex excluding line extensions as a percentage of revenue should decline to below 2022 levels and continue to decline thereafter.
Turning to line extensions. In 2023, we expect line extension capital expenditures to reach approximately $4 billion. We expect 2024 and 2025 line extension capex to look similar to our outlook for 2023 at approximately $4 billion per year. And our 2024 and 2025 line extension capital expenditure expectations assume we win fundings for or otherwise commit to additional rural spending. We also expect most speed money to begin to be appropriated in the 2024 timeframe with four year build timelines from grant.
At that time, we expect that our RDOF spend will begin to ramp-down. We expect the BEAT program to present a unique and attractive opportunity for us to expand our network with subsidies, generating significant returns that solidly exceed our cost of capital. For our additional subsidized passings, we expect our net rural construction cost per passing to be closer to the roughly $3,000 per passing that we've incurred in our recent subsidized state and local builds then to our RDOF per passing costs.
Our six month penetration of passings and our newly built rural areas continues to be around 40%. And we expect penetrations in these areas to continue to grow. If you use the cost per passing that I mentioned a moment ago, a high broadband penetration assumption, which we think is reasonable. Our current ARPU excluding mobile, a high incremental margin based on low incremental overhead costs. And a reasonable terminal multiple or a perpetuity growth rate, you can clearly see the very attractive IRRs associated with our rural builds.
Turning to Slide 10, we generated $1.1 billion of consolidated free cash flow this quarter versus $2.3 billion in the fourth quarter of last year. The decline was primarily driven by higher capital expenditures, mostly the results of our rural construction initiatives and by higher cash tax payments. For the full year, we generated $6.1 billion of free cash flow versus $8.7 billion in 2021. However, excluding cash taxes, and our rural construction initiative, our full year free cash flow grew by 4%.
We finished the quarter with $97.4 billion in debt principal. Our current run rate annualized cash interest is $5 billion. As of the end of the fourth quarter, our ratio of net debt to last 12 month adjusted EBITDA was 4.47 times. We intend to stay at or just below the high end of our 4 times to 4.5 times target leverage range. During the quarter, we repurchased 3.6 million Charter shares and Charter Holdings common units, totaling about $1.3 billion at an average price of $344 per share. For the full year, we repurchased 23.8 million Charter shares and Charter Holdings common units, totaling approximately $11.7 billion.
We have a proven operating balance sheet and capital allocation model that drives customer and financial growth and shareholder value. We've always prioritized investments that generate long-term growth, and those investments ultimately protect and extend our return of capital to shareholders. We continue to generate significant free cash flow and intend to both invest for long-term growth and simultaneously returned excess capital to shareholders in the form of buybacks.
Operator, we're now ready for Q&A.