| Value | Category | Cases | |
|---|---|---|---|
| 1981 | 2 |
0.3%
|
|
| 1982 | 1 |
0.1%
|
|
| 1984 | 2 |
0.3%
|
|
| 1985 | 1 |
0.1%
|
|
| 1987 | 1 |
0.1%
|
|
| 1988 | 1 |
0.1%
|
|
| 1989 | 2 |
0.3%
|
|
| 1990 | 2 |
0.3%
|
|
| 1991 | 1 |
0.1%
|
|
| 1992 | 9 |
1.2%
|
|
| 1993 | 2 |
0.3%
|
|
| 1994 | 8 |
1.1%
|
|
| 1995 | 5 |
0.7%
|
|
| 1996 | 10 |
1.4%
|
|
| 1997 | 7 |
1%
|
|
| 1998 | 13 |
1.8%
|
|
| 1999 | 7 |
1%
|
|
| 2000 | 21 |
2.9%
|
|
| 2001 | 12 |
1.7%
|
|
| 2002 | 13 |
1.8%
|
|
| 2003 | 16 |
2.2%
|
|
| 2004 | 23 |
3.2%
|
|
| 2005 | 35 |
4.9%
|
|
| 2006 | 28 |
3.9%
|
|
| 2007 | 28 |
3.9%
|
|
| 2008 | 36 |
5%
|
|
| 2009 | 46 |
6.4%
|
|
| 2010 | 45 |
6.2%
|
|
| 2011 | 70 |
9.7%
|
|
| 2012 | 79 |
11%
|
|
| 2013 | 105 |
14.6%
|
|
| 2014 | 79 |
11%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | DK | 0 |
0%
|
| 9999 | Missing | 11 |
1.5%
|
| Sysmiss | 908 |