| Value | Category | Cases | |
|---|---|---|---|
| 1997 | 1 |
0.1%
|
|
| 1998 | 1 |
0.1%
|
|
| 1999 | 2 |
0.2%
|
|
| 2000 | 8 |
0.9%
|
|
| 2001 | 15 |
1.8%
|
|
| 2002 | 20 |
2.4%
|
|
| 2003 | 37 |
4.4%
|
|
| 2004 | 40 |
4.7%
|
|
| 2005 | 60 |
7.1%
|
|
| 2006 | 58 |
6.8%
|
|
| 2007 | 70 |
8.2%
|
|
| 2008 | 78 |
9.2%
|
|
| 2009 | 93 |
10.9%
|
|
| 2010 | 105 |
12.4%
|
|
| 2011 | 107 |
12.6%
|
|
| 2012 | 49 |
5.8%
|
|
| 3333 | Missing | 13 |
1.5%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 93 |
10.9%
|
| Sysmiss | 11366 |