| Value | Category | Cases | |
|---|---|---|---|
| 1950 | 4 |
0.2%
|
|
| 1952 | 2 |
0.1%
|
|
| 1954 | 1 |
0.1%
|
|
| 1957 | 1 |
0.1%
|
|
| 1958 | 1 |
0.1%
|
|
| 1960 | 7 |
0.4%
|
|
| 1961 | 2 |
0.1%
|
|
| 1963 | 1 |
0.1%
|
|
| 1965 | 3 |
0.2%
|
|
| 1967 | 2 |
0.1%
|
|
| 1968 | 1 |
0.1%
|
|
| 1969 | 5 |
0.3%
|
|
| 1970 | 31 |
1.9%
|
|
| 1973 | 4 |
0.2%
|
|
| 1974 | 6 |
0.4%
|
|
| 1975 | 10 |
0.6%
|
|
| 1976 | 9 |
0.5%
|
|
| 1977 | 7 |
0.4%
|
|
| 1978 | 8 |
0.5%
|
|
| 1979 | 9 |
0.5%
|
|
| 1980 | 79 |
4.8%
|
|
| 1981 | 1 |
0.1%
|
|
| 1982 | 16 |
1%
|
|
| 1983 | 18 |
1.1%
|
|
| 1984 | 10 |
0.6%
|
|
| 1985 | 41 |
2.5%
|
|
| 1986 | 13 |
0.8%
|
|
| 1987 | 40 |
2.4%
|
|
| 1988 | 24 |
1.5%
|
|
| 1989 | 32 |
1.9%
|
|
| 1990 | 51 |
3.1%
|
|
| 1991 | 9 |
0.5%
|
|
| 1992 | 38 |
2.3%
|
|
| 1993 | 6 |
0.4%
|
|
| 1994 | 3 |
0.2%
|
|
| 1995 | 32 |
1.9%
|
|
| 1996 | 14 |
0.8%
|
|
| 1997 | 50 |
3%
|
|
| 1998 | 30 |
1.8%
|
|
| 1999 | 16 |
1%
|
|
| 2000 | 110 |
6.7%
|
|
| 2001 | 48 |
2.9%
|
|
| 2002 | 94 |
5.7%
|
|
| 2003 | 62 |
3.7%
|
|
| 2004 | 142 |
8.6%
|
|
| 2005 | 178 |
10.8%
|
|
| 2006 | 252 |
15.2%
|
|
| 2007 | 131 |
7.9%
|
|
| 99999 | don't know | 0 |
0%
|
| Sysmiss | 6986 |