| Value | Category | Cases | |
|---|---|---|---|
| 98 | Don't know | 0 |
0%
|
| 1993 | 1 |
0.1%
|
|
| 1994 | 4 |
0.3%
|
|
| 1995 | 11 |
0.9%
|
|
| 1996 | 16 |
1.3%
|
|
| 1997 | 11 |
0.9%
|
|
| 1998 | 16 |
1.3%
|
|
| 1999 | 19 |
1.6%
|
|
| 2000 | 31 |
2.5%
|
|
| 2001 | 24 |
2%
|
|
| 2002 | 39 |
3.2%
|
|
| 2003 | 34 |
2.8%
|
|
| 2004 | 44 |
3.6%
|
|
| 2005 | 64 |
5.3%
|
|
| 2006 | 76 |
6.2%
|
|
| 2007 | 106 |
8.7%
|
|
| 2008 | 150 |
12.3%
|
|
| 2009 | 157 |
12.9%
|
|
| 2010 | 167 |
13.7%
|
|
| 2011 | 150 |
12.3%
|
|
| 2012 | 98 |
8%
|
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 492 |