| Value | Category | Cases | |
|---|---|---|---|
| 1990 | 1 |
1.2%
|
|
| 1993 | 3 |
3.6%
|
|
| 1994 | 1 |
1.2%
|
|
| 1995 | 4 |
4.8%
|
|
| 1996 | 5 |
6%
|
|
| 1997 | 9 |
10.8%
|
|
| 1998 | 19 |
22.9%
|
|
| 1999 | 32 |
38.6%
|
|
| 2000 | 9 |
10.8%
|
|
| 9993 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| 9999 | not applicable | 0 |
0%
|
| 9999995 | missing:impute | 0 |
0%
|
| Sysmiss | 3534 |
