| Value | Category | Cases | |
|---|---|---|---|
| 98 | 1 |
0.1%
|
|
| 99 | Don't Know | 0 |
0%
|
| 1990 | 1 |
0.1%
|
|
| 1996 | 1 |
0.1%
|
|
| 1998 | 3 |
0.4%
|
|
| 1999 | 3 |
0.4%
|
|
| 2000 | 12 |
1.5%
|
|
| 2001 | 18 |
2.3%
|
|
| 2002 | 53 |
6.6%
|
|
| 2003 | 178 |
22.3%
|
|
| 2004 | 406 |
50.9%
|
|
| 2005 | 121 |
15.2%
|
|
| Sysmiss | 762 |