| Value | Category | Cases | |
|---|---|---|---|
| 1960 | 2 |
0%
|
|
| 1965 | 6 |
0.1%
|
|
| 1966 | 1 |
0%
|
|
| 1970 | 2 |
0%
|
|
| 1975 | 2 |
0%
|
|
| 1977 | 1 |
0%
|
|
| 1978 | 1 |
0%
|
|
| 1979 | 817 |
18.7%
|
|
| 1980 | 420 |
9.6%
|
|
| 1981 | 170 |
3.9%
|
|
| 1982 | 210 |
4.8%
|
|
| 1983 | 225 |
5.1%
|
|
| 1984 | 129 |
2.9%
|
|
| 1985 | 121 |
2.8%
|
|
| 1986 | 80 |
1.8%
|
|
| 1987 | 117 |
2.7%
|
|
| 1988 | 71 |
1.6%
|
|
| 1989 | 64 |
1.5%
|
|
| 1990 | 142 |
3.2%
|
|
| 1991 | 40 |
0.9%
|
|
| 1992 | 85 |
1.9%
|
|
| 1993 | 119 |
2.7%
|
|
| 1994 | 62 |
1.4%
|
|
| 1995 | 100 |
2.3%
|
|
| 1996 | 73 |
1.7%
|
|
| 1997 | 94 |
2.1%
|
|
| 1998 | 103 |
2.4%
|
|
| 1999 | 90 |
2.1%
|
|
| 2000 | 207 |
4.7%
|
|
| 2001 | 105 |
2.4%
|
|
| 2002 | 139 |
3.2%
|
|
| 2003 | 133 |
3%
|
|
| 2004 | 130 |
3%
|
|
| 2005 | 149 |
3.4%
|
|
| 2006 | 135 |
3.1%
|
|
| 2007 | 29 |
0.7%
|
|
| Sysmiss | 7 |