| Value | Category | Cases | |
|---|---|---|---|
| 1988 | 8 |
0.2%
|
|
| 1989 | 21 |
0.5%
|
|
| 1990 | 8 |
0.2%
|
|
| 1991 | 32 |
0.7%
|
|
| 1992 | 44 |
1%
|
|
| 1993 | 27 |
0.6%
|
|
| 1994 | 77 |
1.8%
|
|
| 1995 | 89 |
2%
|
|
| 1996 | 84 |
1.9%
|
|
| 1997 | 130 |
3%
|
|
| 1998 | 185 |
4.2%
|
|
| 1999 | 169 |
3.9%
|
|
| 2000 | 155 |
3.6%
|
|
| 2001 | 140 |
3.2%
|
|
| 2002 | 186 |
4.3%
|
|
| 2003 | 231 |
5.3%
|
|
| 2004 | 215 |
4.9%
|
|
| 2005 | 242 |
5.6%
|
|
| 2006 | 236 |
5.4%
|
|
| 2007 | 221 |
5.1%
|
|
| 2008 | 290 |
6.7%
|
|
| 2009 | 272 |
6.2%
|
|
| 2010 | 297 |
6.8%
|
|
| 2011 | 229 |
5.3%
|
|
| 2012 | 306 |
7%
|
|
| 2013 | 460 |
10.6%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 26466 |