| Value | Category | Cases | |
|---|---|---|---|
| 1980 | 1 |
0.1%
|
|
| 1984 | 1 |
0.1%
|
|
| 1990 | 3 |
0.4%
|
|
| 1992 | 1 |
0.1%
|
|
| 1994 | 2 |
0.3%
|
|
| 1996 | 1 |
0.1%
|
|
| 1997 | 1 |
0.1%
|
|
| 1998 | 2 |
0.3%
|
|
| 1999 | 6 |
0.8%
|
|
| 2000 | 8 |
1.1%
|
|
| 2001 | 8 |
1.1%
|
|
| 2002 | 4 |
0.5%
|
|
| 2003 | 5 |
0.7%
|
|
| 2004 | 5 |
0.7%
|
|
| 2005 | 14 |
1.9%
|
|
| 2006 | 13 |
1.7%
|
|
| 2007 | 9 |
1.2%
|
|
| 2008 | 17 |
2.3%
|
|
| 2009 | 13 |
1.7%
|
|
| 2010 | 45 |
6%
|
|
| 2011 | 49 |
6.6%
|
|
| 2012 | 64 |
8.6%
|
|
| 2013 | 109 |
14.6%
|
|
| 2014 | 201 |
26.9%
|
|
| 2015 | 146 |
19.6%
|
|
| 2016 | 5 |
0.7%
|
|
| 9998 | don't remember | 13 |
1.7%
|
| Sysmiss | 12169 |