Frederick J. Crawford
President; Chief Operating Officer at Aflac
Thank you, Dan. Let me begin by briefly commenting on conditions in Japan. As Dan commented on, our revised cancer product, which we refer to as WINGS, is doing well, now introduced in the Japan Post Group. Having rolled out WINGS in Japan Post, we are now at full strength with this refreshed product in all channels. Our entire cancer platform, including in-force policyholders is now supported by our [Indecipherable] cancer consultation services. This platform provides concierge care to cancer policyholders connecting them with noninsurance services. In dialogue with key alliance and distribution partners, we continue to receive feedback that this platform is a differentiator in the marketplace.
From a data perspective, our market research has shown a positive and meaningful impact to our Net Promoter Scores. The sale of WAYS and child endowment continues to deliver on our strategy of attracting younger and new policyholders, along with cross-sell performance. Since the launch of our refreshed WAYS product, approximately 80% of sales are to younger customers below the age of 50. This cohort of younger buyers has driven a concurrent third sector sales rate of approximately 50%. Looking forward, we anticipate launching our new medical product mid-September. As mentioned last quarter, this product design has been simplified to appeal to both younger policyholders with basic needs and older or existing policyholders who desire upgrade in coverage.
As we move through the natural product renewal cycles, we believe simplifying our products is key to driving sales productivity, attracting new and younger policyholders and lowering our operating costs. Turning to operations. We are pleased with our expense ratio traveling below 20% in the first half of the year and in the face of continued revenue pressure. We are actively working to increase digital adoption, focused on new business applications, customer self-service and claims. As we look forward, we anticipate increased levels of investment to drive digital adoption with the goal of remaining competitive by lowering our long-term operating expenses on a per policy basis. Turning to the U.S. Our second quarter results followed a similar pattern as the first quarter with individual dental and vision, group life and disability and consumer markets, all contributing to sales growth.
Group voluntary sales has been down modestly from a strong 2022. However, we remain encouraged by the level of quoting activity that we believe positions us for a stronger second half of the year. Our growth platforms of dental and vision, group life and disability and consumer markets are beginning to have a more material impact on performance. In aggregate, sales produced by these platforms are up over 50%, albeit, of a smaller and building base. With the build largely behind us, we are focused on driving scale, stabilizing new platforms and leveraging our ability to bundle core voluntary products as we work with brokers on larger groups. We are absorbing a pace of investment in growth platforms that pressures our expense ratio but naturally precedes revenue development.
This is particularly the case in our group life and disability business, which is more capital intensive. As we settle into operating these platforms, we are also refining our approach to drive expense efficiencies and a long-term path to profitability. In some cases, making decisions around business we choose to exit and opportunities we aggressively pursue. Last quarter, we commented on our renewed focus on product development in the U.S. Our refreshed cancer product is up roughly 23% and still in the early stages of rollout. Of all the critical illnesses, cancer remains the most frequent and devastating to families and their financial security and we have high expectations for this product. Last week, we announced a new group voluntary term life product which is part of an important effort to increase our overall worksite life sales.
We have lagged in terms of life sales and see this product line as an area where we have market share opportunity. Like cancer insurance, this is a product that should contribute to improved persistency. We are pleased to see a return to earned premium growth in the U.S. and modest recovery in persistency. We continue to drive utilization through wellness campaigns and benefit endorsements to in-force policies with the objective of improved sales, persistency and driving core revenue growth. Now let me pause. And I'm going to turn the call over to Brad Dyslin, to bring you current on the health of our investment portfolio with a focus on the loan book.
Brad?