| Value | Category | Cases | |
|---|---|---|---|
| 1955 | 1 |
0%
|
|
| 1969 | 1 |
0%
|
|
| 1974 | 1 |
0%
|
|
| 1975 | 1 |
0%
|
|
| 1977 | 1 |
0%
|
|
| 1978 | 1 |
0%
|
|
| 1979 | 766 |
18.4%
|
|
| 1980 | 387 |
9.3%
|
|
| 1981 | 177 |
4.3%
|
|
| 1982 | 313 |
7.5%
|
|
| 1983 | 233 |
5.6%
|
|
| 1984 | 133 |
3.2%
|
|
| 1985 | 102 |
2.5%
|
|
| 1986 | 53 |
1.3%
|
|
| 1987 | 45 |
1.1%
|
|
| 1988 | 53 |
1.3%
|
|
| 1989 | 46 |
1.1%
|
|
| 1990 | 127 |
3.1%
|
|
| 1991 | 44 |
1.1%
|
|
| 1992 | 45 |
1.1%
|
|
| 1993 | 115 |
2.8%
|
|
| 1994 | 56 |
1.3%
|
|
| 1995 | 90 |
2.2%
|
|
| 1996 | 42 |
1%
|
|
| 1997 | 89 |
2.1%
|
|
| 1998 | 127 |
3.1%
|
|
| 1999 | 69 |
1.7%
|
|
| 2000 | 161 |
3.9%
|
|
| 2001 | 88 |
2.1%
|
|
| 2002 | 89 |
2.1%
|
|
| 2003 | 119 |
2.9%
|
|
| 2004 | 116 |
2.8%
|
|
| 2005 | 142 |
3.4%
|
|
| 2006 | 130 |
3.1%
|
|
| 2007 | 157 |
3.8%
|
|
| 2008 | 35 |
0.8%
|