| value | category | cases | |
|---|---|---|---|
| 1998 | 360 |
3.6%
|
|
| 1999 | 2014 |
19.9%
|
|
| 2000 | 2129 |
21.1%
|
|
| 2001 | 1868 |
18.5%
|
|
| 2002 | 2056 |
20.3%
|
|
| 2003 | 1683 |
16.6%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | DK | 0 |
0%
|
| Sysmiss | 50656 |