| Value | Category | Cases | |
|---|---|---|---|
| 1955 | 364 |
0.7%
|
|
| 1956 | 1244 |
2.2%
|
|
| 1957 | 1417 |
2.5%
|
|
| 1958 | 1449 |
2.6%
|
|
| 1959 | 1580 |
2.8%
|
|
| 1960 | 1758 |
3.1%
|
|
| 1961 | 1419 |
2.5%
|
|
| 1962 | 1895 |
3.4%
|
|
| 1963 | 1923 |
3.4%
|
|
| 1964 | 1816 |
3.3%
|
|
| 1965 | 2114 |
3.8%
|
|
| 1966 | 2079 |
3.7%
|
|
| 1967 | 2323 |
4.2%
|
|
| 1968 | 1969 |
3.5%
|
|
| 1969 | 2121 |
3.8%
|
|
| 1970 | 2047 |
3.7%
|
|
| 1971 | 2292 |
4.1%
|
|
| 1972 | 2086 |
3.7%
|
|
| 1973 | 2221 |
4%
|
|
| 1974 | 2058 |
3.7%
|
|
| 1975 | 2038 |
3.7%
|
|
| 1976 | 1894 |
3.4%
|
|
| 1977 | 1947 |
3.5%
|
|
| 1978 | 1808 |
3.2%
|
|
| 1979 | 1896 |
3.4%
|
|
| 1980 | 1585 |
2.8%
|
|
| 1981 | 1536 |
2.8%
|
|
| 1982 | 1274 |
2.3%
|
|
| 1983 | 1219 |
2.2%
|
|
| 1984 | 1132 |
2%
|
|
| 1985 | 830 |
1.5%
|
|
| 1986 | 761 |
1.4%
|
|
| 1987 | 573 |
1%
|
|
| 1988 | 451 |
0.8%
|
|
| 1989 | 349 |
0.6%
|
|
| 1990 | 186 |
0.3%
|
|
| 1991 | 94 |
0.2%
|
|
| 1992 | 35 |
0.1%
|
|
| 1993 | 17 |
0%
|
|
| 1994 | 2 |
0%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | DK | 21 |
0%
|
| 9999 | Missing | 0 |
0%
|