| Value | Category | Cases | |
|---|---|---|---|
| 1990 | 23 |
0.2%
|
|
| 1991 | 7 |
0.1%
|
|
| 1992 | 8 |
0.1%
|
|
| 1993 | 8 |
0.1%
|
|
| 1994 | 18 |
0.2%
|
|
| 1995 | 46 |
0.4%
|
|
| 1996 | 80 |
0.7%
|
|
| 1997 | 111 |
1%
|
|
| 1998 | 309 |
2.8%
|
|
| 1999 | 450 |
4.1%
|
|
| 2000 | 838 |
7.7%
|
|
| 2001 | 608 |
5.6%
|
|
| 2002 | 920 |
8.4%
|
|
| 2003 | 1231 |
11.3%
|
|
| 2004 | 1477 |
13.5%
|
|
| 2005 | 1818 |
16.6%
|
|
| 2006 | 1664 |
15.2%
|
|
| 2007 | 1325 |
12.1%
|
|
| Sysmiss | 11505 |