| Value | Category | Cases | |
|---|---|---|---|
| 1935 | 1 |
0.3%
|
|
| 1941 | 1 |
0.3%
|
|
| 1943 | 1 |
0.3%
|
|
| 1947 | 2 |
0.7%
|
|
| 1950 | 1 |
0.3%
|
|
| 1954 | 1 |
0.3%
|
|
| 1955 | 2 |
0.7%
|
|
| 1956 | 2 |
0.7%
|
|
| 1957 | 2 |
0.7%
|
|
| 1960 | 4 |
1.4%
|
|
| 1961 | 3 |
1%
|
|
| 1962 | 5 |
1.7%
|
|
| 1963 | 8 |
2.8%
|
|
| 1964 | 8 |
2.8%
|
|
| 1965 | 4 |
1.4%
|
|
| 1966 | 5 |
1.7%
|
|
| 1967 | 9 |
3.1%
|
|
| 1968 | 12 |
4.2%
|
|
| 1969 | 15 |
5.2%
|
|
| 1970 | 16 |
5.6%
|
|
| 1971 | 13 |
4.5%
|
|
| 1972 | 10 |
3.5%
|
|
| 1973 | 15 |
5.2%
|
|
| 1974 | 11 |
3.8%
|
|
| 1975 | 10 |
3.5%
|
|
| 1976 | 7 |
2.4%
|
|
| 1977 | 10 |
3.5%
|
|
| 1978 | 10 |
3.5%
|
|
| 1979 | 11 |
3.8%
|
|
| 1980 | 7 |
2.4%
|
|
| 1981 | 3 |
1%
|
|
| 1982 | 6 |
2.1%
|
|
| 1983 | 5 |
1.7%
|
|
| 1984 | 6 |
2.1%
|
|
| 1986 | 4 |
1.4%
|
|
| 1989 | 2 |
0.7%
|
|
| 1991 | 2 |
0.7%
|
|
| 1992 | 1 |
0.3%
|
|
| 1993 | 1 |
0.3%
|
|
| 1996 | 1 |
0.3%
|
|
| 1998 | 1 |
0.3%
|
|
| 2000 | 3 |
1%
|
|
| 2005 | 2 |
0.7%
|
|
| 9995 | missing | 1 |
0.3%
|
| 9997 | refused | 0 |
0%
|
| 9998 | dont know | 38 |
13.3%
|
| 9999 | not applicable | 4 |
1.4%
|
| Sysmiss | 5605 |