| Value | Category | Cases | |
|---|---|---|---|
| 1987 | 1 |
0%
|
|
| 1988 | 1 |
0%
|
|
| 1989 | 2 |
0.1%
|
|
| 1990 | 11 |
0.3%
|
|
| 1991 | 24 |
0.7%
|
|
| 1992 | 25 |
0.7%
|
|
| 1993 | 14 |
0.4%
|
|
| 1994 | 42 |
1.2%
|
|
| 1995 | 31 |
0.9%
|
|
| 1996 | 50 |
1.5%
|
|
| 1997 | 63 |
1.9%
|
|
| 1998 | 84 |
2.5%
|
|
| 1999 | 53 |
1.6%
|
|
| 2000 | 94 |
2.8%
|
|
| 2001 | 60 |
1.8%
|
|
| 2002 | 86 |
2.5%
|
|
| 2003 | 118 |
3.5%
|
|
| 2004 | 77 |
2.3%
|
|
| 2005 | 58 |
1.7%
|
|
| 2006 | 92 |
2.7%
|
|
| 2007 | 84 |
2.5%
|
|
| 2008 | 68 |
2%
|
|
| 2009 | 85 |
2.5%
|
|
| 2010 | 117 |
3.5%
|
|
| 2011 | 117 |
3.5%
|
|
| 2012 | 122 |
3.6%
|
|
| 2013 | 163 |
4.8%
|
|
| 2014 | 261 |
7.7%
|
|
| 2015 | 281 |
8.3%
|
|
| 2016 | 332 |
9.8%
|
|
| 2017 | 382 |
11.3%
|
|
| 2018 | 358 |
10.6%
|
|
| 2019 | 10 |
0.3%
|
|
| 9999 | NO RESPONSE | 7 |
0.2%
|
| Sysmiss | 18 |
0.5%
|