| Value | Category | Cases | |
|---|---|---|---|
| 1985 | 2 |
0.1%
|
|
| 1986 | 2 |
0.1%
|
|
| 1987 | 1 |
0%
|
|
| 1988 | 1 |
0%
|
|
| 1989 | 4 |
0.1%
|
|
| 1990 | 11 |
0.3%
|
|
| 1991 | 11 |
0.3%
|
|
| 1992 | 14 |
0.4%
|
|
| 1993 | 30 |
0.8%
|
|
| 1994 | 26 |
0.7%
|
|
| 1995 | 38 |
1%
|
|
| 1996 | 34 |
0.9%
|
|
| 1997 | 70 |
1.8%
|
|
| 1998 | 68 |
1.7%
|
|
| 1999 | 106 |
2.7%
|
|
| 2000 | 122 |
3.1%
|
|
| 2001 | 145 |
3.6%
|
|
| 2002 | 212 |
5.3%
|
|
| 2003 | 233 |
5.8%
|
|
| 2004 | 281 |
7%
|
|
| 2005 | 329 |
8.2%
|
|
| 2006 | 403 |
10.1%
|
|
| 2007 | 514 |
12.9%
|
|
| 2008 | 872 |
21.8%
|
|
| 2009 | 466 |
11.7%
|
|
| 9997 | na | 0 |
0%
|
| 9998 | dk | 0 |
0%
|
| 9999 | missing | 1 |
0%
|
| Sysmiss | 47312 |