| Value | Category | Cases | |
|---|---|---|---|
| 1991 | 1 |
0%
|
|
| 1992 | 1 |
0%
|
|
| 1995 | 1 |
0%
|
|
| 1996 | 2 |
0%
|
|
| 1997 | 1 |
0%
|
|
| 1998 | 4 |
0.1%
|
|
| 1999 | 1 |
0%
|
|
| 2000 | 11 |
0.3%
|
|
| 2001 | 14 |
0.3%
|
|
| 2002 | 23 |
0.5%
|
|
| 2003 | 37 |
0.9%
|
|
| 2004 | 69 |
1.6%
|
|
| 2005 | 76 |
1.8%
|
|
| 2006 | 100 |
2.4%
|
|
| 2007 | 138 |
3.3%
|
|
| 2008 | 144 |
3.4%
|
|
| 2009 | 138 |
3.3%
|
|
| 2010 | 143 |
3.4%
|
|
| 2011 | 175 |
4.1%
|
|
| 2012 | 28 |
0.7%
|
|
| 9998 | don't know | 54 |
1.3%
|
| 9999 | not applicable | 2970 |
70.4%
|
| 9999995 | missing:impute | 89 |
2.1%
|
| Sysmiss | 13 |