| Value |
Category |
| 1960 |
[1960,1980) |
| 1980 |
[1980,1990) |
| 1990 |
[1990,2000) |
| 2000 |
[2000,2010) |
| 2010 |
[2010,2020) |
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.