Dane Whitehead
Executive Vice President and Chief Financial Officer at Marathon Oil
Thank you, Lee, and good morning, everybody. Full year 2022 data shows that we performed at the very top of a high-quality E&P peer group last year, as well as the broader market, consistent with the charts on Slide 7 of our deck. An analysis of 2023 guidance indicates that our business plan again benchmarks at the very top of our sector on all the metrics that we believe matter most. I'll start with a recap of our 2023 return on capital outlook summarized on Slide 8 of our slide deck.
As I've stated many times on our earnings calls, returning significant capital to shareholders holders through this cycle, remains foundational to our value proposition. We're focused on building, excuse me, a long-term track record of consistent shareholder returns that can be measured in years, not just quarters and 1Q was another step on that journey. We again exceeded our commitment to return a minimum of 40% of our CFO, returning 42% to shareholders including $334 million of share repurchases and our $63 million base dividend.
Looking at the full year, we expect to continue adhering to our return on capital framework, while also paying down debt, including some of the Ensign related finance. We believe we can do both, maintain our return of capital, leadership and further enhance our already investment-grade balance sheet. And we're off to a great start beating our 40% of CFO target in 1Q, while paying down $70 million high coupon USX [Phonetic] debt and remarketing $200 million of tax-exempt bonds at a very favorable rate.
We'll take-down the remaining $130 million of USX debt in July and maturity. We continue to believe our cash flow driven return of capital framework is great advantage versus peers, truly providing investors with the first call on cash flow and insulating shareholder returns from the effects of capital inflation, offsetting inflation is on us, not the shareholder. Even at our minimum 40% of CFO commitment, our return of capital framework is sector leading. It provides clear visibility to a double-digit distribution yield across a broad range of commodity prices as shown on the top right graphic on Slide 8 and it benchmarks the very top of our peer group with a total shareholder yield about double the peer average.
In terms of our preferred vehicle for shareholder returns, there's no change to our approach to pay a competitive sustainable base dividend with the lion's share of shareholder returns coming through share repurchases. We currently have $2 billion of buyback authorization outstanding, which gives us plenty of room to keep executing. With our free cash flow yield in the high-teens buybacks remain significantly value-accretive, a very efficient means to drive per share growth and highly synergistic withdrawing our base dividends, which we've raised eight out of the last 10 quarters without compromising sustainability.
So, peers have now migrated to our model where an early proponent of share repurchases and our dollar cost averaging approach since October 2021 has delivered a peer-leading 22% reduction in our shares outstanding. The strength and durability of our shareholder return profile underpins our strong free cash flow generation and capital efficiency. While first quarter free cash flow was solid at $330 million, we expect both our underlying free cash flow and cash flow from operations to strengthen as we progress through the year.
There are a number of factors driving this trend. As we mentioned, we didn't receive any EG cash dividends during 1Q, we expect to start receiving those distributions in the second quarter, beginning with a larger than normal dividend of more than $200 million. Additionally, our capex is front-end loaded with 2Q capital spend expected to be comparable first quarter, consistent with our outlook for about 60% of our full year capital to be concentrated in the first half of the year. And the timing of this spend will drive oil production growth from 1Q levels, improving our cash flow generation capacity as we move through the year. Therefore, operationally and financially, we remain fully on track with the assumptions that underpinned our initial full year free cash flow outlook cited earlier this year.
And our 2023 outlook very clearly benchmarks at the top of our peer space, as illustrated on Page 9 of the pack. We continue to trade as one of the most attractive free cash flow yields in the entire S&P 500 as the top left graphic shows. All this meeting free cash flow yields is in part due to attractive valuation, it's also a function of our peer leading free cash flow efficiency. The top right graphic shows our free cash flow margins well above the peer average, for every barrel we produce, we're delivering 30% more free cash flow than the average high quality E&P.
Similarly, our reinvestment rate, a direct measure of capital invested versus cash flow generated, a true cash flow efficiency metric as it considers both capital and operating expenditures is the lowest in the peer space, a full 10 percentage points below average. Further, our capital intensity as measured by capex per barrel of production is more than 20% better than the peer average. This strong performance is a testament to not only the quality of our asset base, but the strength of our operational execution and the discipline inherent in our capital allocation framework. Our focus remains on maximizing the free cash flow and returns on every dollar we spend.
Turning to Slide 10. We benchmark ourselves on one of the most important metrics for our sector, our free cash flow breakeven or the WTI oil price necessary to achieve free cash flow neutrality, a metrics so important that we've hardwired into our short-term incentives. Our disciplined capital allocation, ongoing cost structure optimization and our relentless focus on our capital and operating efficiency, our objective is to maintain the lowest sustainable free cash flow breakeven level.
This is crucial to maintaining business model resilience and ensuring we are positioned to deliver compelling free cash flow across a broad range of commodity prices. When commodity prices are healthy, we expect to materially outperform the S&P 500 in free-cash flow generation. When commodity prices are challenged, we expect to remain competitive with the S&P 500. We can only do this by maintaining a low free cash flow breakeven. And Slide 10 shows, we have the lowest 2023 pre-dividend and free cash flow breakeven among high-quality peers at around $40 per barrel WTI.
Additionally, we expect to realize significant improvement in our free cash flow breakeven from 2023 to 2024, largely driven by the expected financial uplift in EG. So, while our 2023 competitive positioning is strong, it's even better in 2024. Finally, our free cash flow breakeven is also the lowest on a post dividend basis while we've raised our base dividend in eight of the last 10 orders, we stayed focused on base dividend sustainability and the synergies that exist between share buybacks and sustainable dividend growth. Whereas certain peers now our base dividends and add $10 or even $15 per barrel to their breakeven, our base dividend has the more modest $3 to $4 a barrel, underscoring a sustainability in our headroom for longer-term growth, as long as we continue to reduce our share count.
Next Slide 11. We've been a leading proponent of a capital allocation framework that strongly prioritizes corporate returns and free cash flow generation over production growth, the reality is that we're leading the peer group in growth on a per share basis. 2021 to 2023, we expected to grow our production per share by more than 40%. In 2023, alone, we expected to grow production per share by approximately 30% year-over-year. Absolute production growth is not the objective, but we do see value and significantly growing our underlying per share metrics.
Two primary factors are driving our exceptional per share growth profile, first a consistent and disciplined approach to shareholder returns with strong emphasis on buybacks. Through our buyback program, we've reduced our share count by 22% in the last six quarters. Our peers have move toward our model, but we're definitely enjoying a first mover advantage and second, a highly-accretive Ensign acquisition, which increased our maintenance well production by approximately 12%, with no increase in share count.
So with that summary of our 2023 business plan competitiveness, I'll turn it over to Mike to provide a brief update on Ensign and our recent outstanding performance in the Permian.