This report uses age cohort groups that are defined as the decade when respondents were born. Decades are defined as the years sharing the same tens-place digit (e.g., the cohort born in the 1940s was born between Jan. 1, 1940, and Dec. 31, 1949).

Data is shown for years when the majority of an age cohort’s members are ages 18 and older and ages 79 and younger. This means data for the younger cohorts is first reported for the year when their oldest members turn 26, and reporting stops when the majority of older cohorts are 80 or older (for example, the born in the 1920s and 1930s cohorts are not reported for 2023).