40%美国退休老人收入只有Social Security Benefits

New Report: 40% of Older Americans Rely Solely on Social Security for Retirement Income

https://www.nirsonline.org/2020/01/new-report-40-of-older-americans-rely-solely-on-social-security-for-retirement-income/#:~:text=A%20new%20report%20also%20finds,not%20intended%20to%20stand%20alone.