| Value | Category | Cases | |
|---|---|---|---|
| 1999 | 29 |
0.2%
|
|
| 2000 | 683 |
5.2%
|
|
| 2001 | 787 |
6%
|
|
| 2002 | 741 |
5.7%
|
|
| 2003 | 818 |
6.3%
|
|
| 2004 | 871 |
6.7%
|
|
| 2005 | 879 |
6.7%
|
|
| 2006 | 899 |
6.9%
|
|
| 2007 | 926 |
7.1%
|
|
| 2008 | 963 |
7.4%
|
|
| 2009 | 883 |
6.8%
|
|
| 2010 | 925 |
7.1%
|
|
| 2011 | 872 |
6.7%
|
|
| 2012 | 859 |
6.6%
|
|
| 2013 | 868 |
6.7%
|
|
| 2014 | 832 |
6.4%
|
|
| 2015 | 194 |
1.5%
|
|
| 3333 | Missing | 3 |
0%
|
| 5555 | Not applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 2 |
0%
|
| Sysmiss | 937 |