| Value | Category | Cases | |
|---|---|---|---|
| 1996 | 1 |
0.8%
|
|
| 1997 | 3 |
2.4%
|
|
| 1998 | 3 |
2.4%
|
|
| 1999 | 5 |
4.1%
|
|
| 2000 | 6 |
4.9%
|
|
| 2001 | 1 |
0.8%
|
|
| 2002 | 7 |
5.7%
|
|
| 2003 | 6 |
4.9%
|
|
| 2004 | 8 |
6.5%
|
|
| 2005 | 11 |
8.9%
|
|
| 2006 | 18 |
14.6%
|
|
| 2007 | 18 |
14.6%
|
|
| 2008 | 28 |
22.8%
|
|
| 2009 | 8 |
6.5%
|
|
| 9998 | dk | 0 |
0%
|
| Sysmiss | 51185 |