| Value | Category | Cases | |
|---|---|---|---|
| 1979 | 2 |
0.1%
|
|
| 1983 | 1 |
0.1%
|
|
| 1984 | 1 |
0.1%
|
|
| 1985 | 2 |
0.1%
|
|
| 1987 | 3 |
0.2%
|
|
| 1988 | 5 |
0.3%
|
|
| 1989 | 2 |
0.1%
|
|
| 1991 | 1 |
0.1%
|
|
| 1992 | 1 |
0.1%
|
|
| 1996 | 1 |
0.1%
|
|
| 1997 | 4 |
0.2%
|
|
| 1998 | 5 |
0.3%
|
|
| 1999 | 18 |
0.9%
|
|
| 2000 | 347 |
17.5%
|
|
| 2001 | 466 |
23.5%
|
|
| 2002 | 589 |
29.7%
|
|
| 2003 | 533 |
26.9%
|
|
| 9999 | ns | 0 |
0%
|
| Sysmiss | 15 |