| Value | Category | Cases | |
|---|---|---|---|
| 98 | Don't know | 0 |
0%
|
| 998 | Don't know | 0 |
0%
|
| 1991 | 2 |
0.4%
|
|
| 1992 | 2 |
0.4%
|
|
| 1993 | 4 |
0.9%
|
|
| 1994 | 12 |
2.7%
|
|
| 1995 | 10 |
2.2%
|
|
| 1996 | 8 |
1.8%
|
|
| 1997 | 11 |
2.4%
|
|
| 1998 | 13 |
2.9%
|
|
| 1999 | 14 |
3.1%
|
|
| 2000 | 22 |
4.9%
|
|
| 2001 | 12 |
2.7%
|
|
| 2002 | 20 |
4.4%
|
|
| 2003 | 27 |
6%
|
|
| 2004 | 32 |
7.1%
|
|
| 2005 | 39 |
8.6%
|
|
| 2006 | 41 |
9.1%
|
|
| 2007 | 39 |
8.6%
|
|
| 2008 | 33 |
7.3%
|
|
| 2009 | 65 |
14.4%
|
|
| 2010 | 22 |
4.9%
|
|
| 2011 | 11 |
2.4%
|
|
| 2012 | 6 |
1.3%
|
|
| 9998 | Don't know | 6 |
1.3%
|
| Sysmiss | 1088 |