| Value | Category | Cases | |
|---|---|---|---|
| 99 | Don't Know | 0 |
0%
|
| 2000 | 1 |
0.1%
|
|
| 2001 | 84 |
11.1%
|
|
| 2002 | 64 |
8.4%
|
|
| 2003 | 319 |
42.1%
|
|
| 2004 | 290 |
38.3%
|
|
| Sysmiss | 798 |