| Value | Category | Cases | |
|---|---|---|---|
| 1991 | 21 |
1.1%
|
|
| 1992 | 208 |
10.5%
|
|
| 1993 | 97 |
4.9%
|
|
| 1994 | 97 |
4.9%
|
|
| 1995 | 194 |
9.8%
|
|
| 1996 | 274 |
13.8%
|
|
| 1997 | 139 |
7%
|
|
| 1998 | 153 |
7.7%
|
|
| 1999 | 97 |
4.9%
|
|
| 2000 | 162 |
8.2%
|
|
| 2001 | 103 |
5.2%
|
|
| 2002 | 69 |
3.5%
|
|
| 2003 | 53 |
2.7%
|
|
| 2004 | 51 |
2.6%
|
|
| 2005 | 50 |
2.5%
|
|
| 2006 | 26 |
1.3%
|
|
| 2007 | 45 |
2.3%
|
|
| 2008 | 34 |
1.7%
|
|
| 2009 | 15 |
0.8%
|
|
| 2010 | 14 |
0.7%
|
|
| 2011 | 11 |
0.6%
|
|
| 9997 | Incosistent | 0 |
0%
|
| 9998 | DK | 3 |
0.2%
|
| 9999 | Missing | 65 |
3.3%
|
| Sysmiss | 4857 |