| Value | Category | Cases | |
|---|---|---|---|
| 1980 | 2 |
0%
|
|
| 1981 | 6 |
0.1%
|
|
| 1982 | 16 |
0.1%
|
|
| 1983 | 11 |
0.1%
|
|
| 1984 | 23 |
0.2%
|
|
| 1985 | 33 |
0.3%
|
|
| 1986 | 67 |
0.6%
|
|
| 1987 | 70 |
0.7%
|
|
| 1988 | 77 |
0.7%
|
|
| 1989 | 106 |
1%
|
|
| 1990 | 132 |
1.2%
|
|
| 1991 | 128 |
1.2%
|
|
| 1992 | 162 |
1.5%
|
|
| 1993 | 181 |
1.7%
|
|
| 1994 | 180 |
1.7%
|
|
| 1995 | 230 |
2.1%
|
|
| 1996 | 239 |
2.2%
|
|
| 1997 | 276 |
2.6%
|
|
| 1998 | 337 |
3.1%
|
|
| 1999 | 331 |
3.1%
|
|
| 2000 | 414 |
3.8%
|
|
| 2001 | 315 |
2.9%
|
|
| 2002 | 387 |
3.6%
|
|
| 2003 | 371 |
3.4%
|
|
| 2004 | 374 |
3.5%
|
|
| 2005 | 475 |
4.4%
|
|
| 2006 | 447 |
4.2%
|
|
| 2007 | 466 |
4.3%
|
|
| 2008 | 520 |
4.8%
|
|
| 2009 | 554 |
5.1%
|
|
| 2010 | 617 |
5.7%
|
|
| 2011 | 549 |
5.1%
|
|
| 2012 | 573 |
5.3%
|
|
| 2013 | 621 |
5.8%
|
|
| 2014 | 799 |
7.4%
|
|
| 2015 | 526 |
4.9%
|
|
| 2016 | 25 |
0.2%
|
|
| 9998 | don't know | 124 |
1.2%
|
| Sysmiss | 27954 |