| Value | Category | Cases | |
|---|---|---|---|
| 1975 | 1 |
0%
|
|
| 1979 | 698 |
17.4%
|
|
| 1980 | 236 |
5.9%
|
|
| 1981 | 154 |
3.8%
|
|
| 1982 | 204 |
5.1%
|
|
| 1983 | 111 |
2.8%
|
|
| 1984 | 136 |
3.4%
|
|
| 1985 | 137 |
3.4%
|
|
| 1986 | 71 |
1.8%
|
|
| 1987 | 69 |
1.7%
|
|
| 1988 | 41 |
1%
|
|
| 1989 | 46 |
1.1%
|
|
| 1990 | 129 |
3.2%
|
|
| 1991 | 51 |
1.3%
|
|
| 1992 | 63 |
1.6%
|
|
| 1993 | 110 |
2.7%
|
|
| 1994 | 59 |
1.5%
|
|
| 1995 | 99 |
2.5%
|
|
| 1996 | 54 |
1.3%
|
|
| 1997 | 65 |
1.6%
|
|
| 1998 | 73 |
1.8%
|
|
| 1999 | 90 |
2.2%
|
|
| 2000 | 182 |
4.5%
|
|
| 2001 | 59 |
1.5%
|
|
| 2002 | 91 |
2.3%
|
|
| 2003 | 92 |
2.3%
|
|
| 2004 | 134 |
3.3%
|
|
| 2005 | 156 |
3.9%
|
|
| 2006 | 100 |
2.5%
|
|
| 2007 | 186 |
4.6%
|
|
| 2008 | 180 |
4.5%
|
|
| 2009 | 109 |
2.7%
|
|
| 2010 | 24 |
0.6%
|
|
| Sysmiss | 7 |