| Value | Category | Cases | |
|---|---|---|---|
| 1997 | 27 |
3%
|
|
| 1998 | 59 |
6.6%
|
|
| 1999 | 63 |
7%
|
|
| 2000 | 59 |
6.6%
|
|
| 2001 | 70 |
7.8%
|
|
| 2002 | 59 |
6.6%
|
|
| 2003 | 70 |
7.8%
|
|
| 2004 | 59 |
6.6%
|
|
| 2005 | 53 |
5.9%
|
|
| 2006 | 74 |
8.3%
|
|
| 2007 | 79 |
8.8%
|
|
| 2008 | 81 |
9%
|
|
| 2009 | 96 |
10.7%
|
|
| 2010 | 47 |
5.2%
|
|
| 9998 | DK | 0 |
0%
|
| 9999 | Missing | 0 |
0%
|