| Value | Category | Cases | |
|---|---|---|---|
| 1955 | 1 |
0%
|
|
| 1956 | 1 |
0%
|
|
| 1957 | 2 |
0%
|
|
| 1958 | 2 |
0%
|
|
| 1959 | 6 |
0%
|
|
| 1960 | 14 |
0%
|
|
| 1961 | 11 |
0%
|
|
| 1962 | 27 |
0%
|
|
| 1963 | 38 |
0%
|
|
| 1964 | 60 |
0.1%
|
|
| 1965 | 88 |
0.1%
|
|
| 1966 | 98 |
0.1%
|
|
| 1967 | 142 |
0.2%
|
|
| 1968 | 218 |
0.3%
|
|
| 1969 | 312 |
0.4%
|
|
| 1970 | 332 |
0.4%
|
|
| 1971 | 443 |
0.5%
|
|
| 1972 | 546 |
0.7%
|
|
| 1973 | 671 |
0.8%
|
|
| 1974 | 810 |
1%
|
|
| 1975 | 854 |
1.1%
|
|
| 1976 | 1003 |
1.2%
|
|
| 1977 | 1162 |
1.4%
|
|
| 1978 | 1221 |
1.5%
|
|
| 1979 | 1578 |
1.9%
|
|
| 1980 | 1608 |
2%
|
|
| 1981 | 1916 |
2.4%
|
|
| 1982 | 1851 |
2.3%
|
|
| 1983 | 2171 |
2.7%
|
|
| 1984 | 2195 |
2.7%
|
|
| 1985 | 2423 |
3%
|
|
| 1986 | 2372 |
2.9%
|
|
| 1987 | 2657 |
3.3%
|
|
| 1988 | 2424 |
3%
|
|
| 1989 | 2822 |
3.5%
|
|
| 1990 | 2767 |
3.4%
|
|
| 1991 | 3287 |
4.1%
|
|
| 1992 | 3110 |
3.8%
|
|
| 1993 | 3194 |
3.9%
|
|
| 1994 | 3221 |
4%
|
|
| 1995 | 3208 |
4%
|
|
| 1996 | 3185 |
3.9%
|
|
| 1997 | 2947 |
3.6%
|
|
| 1998 | 2801 |
3.5%
|
|
| 1999 | 1771 |
2.2%
|
|
| 2000 | 22 |
0%
|
|
| 9999 | 19359 |
23.9%
|