Value | Category | Cases | |
---|---|---|---|
1968 | 1 |
0.2%
|
|
1970 | 1 |
0.2%
|
|
1972 | 7 |
1.7%
|
|
1973 | 2 |
0.5%
|
|
1974 | 5 |
1.2%
|
|
1975 | 3 |
0.7%
|
|
1976 | 8 |
1.9%
|
|
1977 | 12 |
2.9%
|
|
1978 | 10 |
2.4%
|
|
1979 | 7 |
1.7%
|
|
1980 | 19 |
4.6%
|
|
1981 | 12 |
2.9%
|
|
1982 | 13 |
3.1%
|
|
1983 | 17 |
4.1%
|
|
1984 | 11 |
2.6%
|
|
1985 | 19 |
4.6%
|
|
1986 | 24 |
5.8%
|
|
1987 | 20 |
4.8%
|
|
1988 | 15 |
3.6%
|
|
1989 | 20 |
4.8%
|
|
1990 | 15 |
3.6%
|
|
1991 | 22 |
5.3%
|
|
1992 | 24 |
5.8%
|
|
1993 | 23 |
5.5%
|
|
1994 | 32 |
7.7%
|
|
1995 | 25 |
6%
|
|
1996 | 26 |
6.2%
|
|
1997 | 10 |
2.4%
|
|
1998 | 10 |
2.4%
|
|
1999 | 3 |
0.7%
|
|
2000 | 1 |
0.2%
|