[1] "What Percentage of Americans Have a Retirement Savings Account?" news.gallup.com/poll/691202/percentage-americans-retirement-savings-account.aspx (June 2, 2025).
[2] Nationwide Retirement Institute consumer survey (March 2025).
[3] "U.S. centenarian population is projected to quadruple over the next 30 years," Katherine Schaeffer for Pew Research Center, pewresearch.org/short-reads/2024/01/09/us-centenarian-population-is-projected-to-quadruple-over-the-next-30-years (Jan. 9, 2024).