| Value | Category | Cases | |
|---|---|---|---|
| 1997 | 51 |
2.7%
|
|
| 1998 | 148 |
7.9%
|
|
| 1999 | 155 |
8.3%
|
|
| 2000 | 147 |
7.8%
|
|
| 2001 | 133 |
7.1%
|
|
| 2002 | 121 |
6.4%
|
|
| 2003 | 122 |
6.5%
|
|
| 2004 | 121 |
6.4%
|
|
| 2005 | 128 |
6.8%
|
|
| 2006 | 132 |
7%
|
|
| 2007 | 164 |
8.7%
|
|
| 2008 | 156 |
8.3%
|
|
| 2009 | 176 |
9.4%
|
|
| 2010 | 122 |
6.5%
|
|
| 9998 | DK | 0 |
0%
|
| 9999 | Missing | 0 |
0%
|