The first chart shows the trends started around 1978. Someone who was 25 then would be 65 now. And the worst time to be 25ish was the mid 1980s. That cohort is

The first chart shows the trends started around 1978. Someone who was 25 then would be 65 now. And the worst time to be 25ish was the mid 1980s. That cohort is in their late 50s now. So I bet the 65+ line will fall as those who were less than 25 in 1978 start to join that group.