| Value |
Category |
| 1 |
|
| 2 |
|
| 11 |
|
| 1982 |
|
| 1997 |
|
| 1998 |
|
| 1999 |
|
| 2004 |
|
| 2007 |
|
| 2008 |
|
| 2009 |
|
| 2010 |
|
| 8888 |
D/K Year |
| 9999 |
N/A |
| 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.
