| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
0%
|
|
| 1950 | 1 |
0%
|
|
| 1952 | 1 |
0%
|
|
| 1953 | 2 |
0%
|
|
| 1954 | 1 |
0%
|
|
| 1956 | 3 |
0.1%
|
|
| 1957 | 11 |
0.2%
|
|
| 1958 | 9 |
0.2%
|
|
| 1959 | 16 |
0.4%
|
|
| 1960 | 18 |
0.4%
|
|
| 1961 | 15 |
0.3%
|
|
| 1962 | 23 |
0.5%
|
|
| 1963 | 12 |
0.3%
|
|
| 1964 | 36 |
0.8%
|
|
| 1965 | 18 |
0.4%
|
|
| 1966 | 17 |
0.4%
|
|
| 1967 | 28 |
0.6%
|
|
| 1968 | 26 |
0.6%
|
|
| 1969 | 17 |
0.4%
|
|
| 1970 | 25 |
0.5%
|
|
| 1971 | 39 |
0.9%
|
|
| 1972 | 69 |
1.5%
|
|
| 1973 | 32 |
0.7%
|
|
| 1974 | 51 |
1.1%
|
|
| 1975 | 48 |
1.1%
|
|
| 1976 | 53 |
1.2%
|
|
| 1977 | 46 |
1%
|
|
| 1978 | 81 |
1.8%
|
|
| 1979 | 106 |
2.3%
|
|
| 1980 | 102 |
2.2%
|
|
| 1981 | 90 |
2%
|
|
| 1982 | 107 |
2.3%
|
|
| 1983 | 104 |
2.3%
|
|
| 1984 | 106 |
2.3%
|
|
| 1985 | 128 |
2.8%
|
|
| 1986 | 107 |
2.3%
|
|
| 1987 | 106 |
2.3%
|
|
| 1988 | 87 |
1.9%
|
|
| 1989 | 101 |
2.2%
|
|
| 1990 | 128 |
2.8%
|
|
| 1991 | 149 |
3.3%
|
|
| 1992 | 136 |
3%
|
|
| 1993 | 241 |
5.3%
|
|
| 1994 | 230 |
5%
|
|
| 1995 | 149 |
3.3%
|
|
| 1996 | 183 |
4%
|
|
| 1997 | 181 |
4%
|
|
| 1998 | 217 |
4.7%
|
|
| 1999 | 302 |
6.6%
|
|
| 2000 | 331 |
7.2%
|
|
| 2001 | 325 |
7.1%
|
|
| 2002 | 154 |
3.4%
|