| Value | Category | Cases | |
|---|---|---|---|
| 1959 | 939 |
2.2%
|
|
| 1960 | 1319 |
3.2%
|
|
| 1961 | 841 |
2%
|
|
| 1962 | 1216 |
2.9%
|
|
| 1963 | 1790 |
4.3%
|
|
| 1964 | 1059 |
2.5%
|
|
| 1965 | 994 |
2.4%
|
|
| 1966 | 955 |
2.3%
|
|
| 1967 | 885 |
2.1%
|
|
| 1968 | 2612 |
6.2%
|
|
| 1969 | 1392 |
3.3%
|
|
| 1970 | 1734 |
4.1%
|
|
| 1971 | 1047 |
2.5%
|
|
| 1972 | 1718 |
4.1%
|
|
| 1973 | 2343 |
5.6%
|
|
| 1974 | 1808 |
4.3%
|
|
| 1975 | 1402 |
3.4%
|
|
| 1976 | 1693 |
4%
|
|
| 1977 | 1279 |
3.1%
|
|
| 1978 | 2716 |
6.5%
|
|
| 1979 | 1249 |
3%
|
|
| 1980 | 1774 |
4.2%
|
|
| 1981 | 985 |
2.4%
|
|
| 1982 | 1594 |
3.8%
|
|
| 1983 | 1420 |
3.4%
|
|
| 1984 | 1302 |
3.1%
|
|
| 1985 | 920 |
2.2%
|
|
| 1986 | 1020 |
2.4%
|
|
| 1987 | 584 |
1.4%
|
|
| 1988 | 614 |
1.5%
|
|
| 1989 | 224 |
0.5%
|
|
| 1990 | 176 |
0.4%
|
|
| 1991 | 52 |
0.1%
|
|
| 1992 | 35 |
0.1%
|
|
| 1993 | 9 |
0%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | DK | 106 |
0.3%
|
| 9999 | Missing | 0 |
0%
|