| Value | Category | Cases | |
|---|---|---|---|
| 1912 | 1 |
0.3%
|
|
| 1917 | 1 |
0.3%
|
|
| 1922 | 1 |
0.3%
|
|
| 1929 | 1 |
0.3%
|
|
| 1948 | 1 |
0.3%
|
|
| 1965 | 1 |
0.3%
|
|
| 1967 | 2 |
0.7%
|
|
| 1970 | 2 |
0.7%
|
|
| 1971 | 1 |
0.3%
|
|
| 1973 | 2 |
0.7%
|
|
| 1974 | 1 |
0.3%
|
|
| 1975 | 1 |
0.3%
|
|
| 1976 | 3 |
1%
|
|
| 1978 | 2 |
0.7%
|
|
| 1980 | 1 |
0.3%
|
|
| 1981 | 6 |
2%
|
|
| 1982 | 3 |
1%
|
|
| 1983 | 5 |
1.7%
|
|
| 1984 | 3 |
1%
|
|
| 1985 | 6 |
2%
|
|
| 1986 | 11 |
3.7%
|
|
| 1987 | 10 |
3.3%
|
|
| 1988 | 8 |
2.7%
|
|
| 1989 | 10 |
3.3%
|
|
| 1990 | 21 |
7%
|
|
| 1991 | 10 |
3.3%
|
|
| 1992 | 14 |
4.7%
|
|
| 1993 | 16 |
5.3%
|
|
| 1994 | 17 |
5.6%
|
|
| 1995 | 20 |
6.6%
|
|
| 1996 | 17 |
5.6%
|
|
| 1997 | 16 |
5.3%
|
|
| 1998 | 19 |
6.3%
|
|
| 1999 | 15 |
5%
|
|
| 2000 | 19 |
6.3%
|
|
| 2001 | 18 |
6%
|
|
| 2002 | 16 |
5.3%
|
|
| 2147483622 | Not applicable | 0 |
0%
|
| 2147483623 | Refusal | 0 |
0%
|
| 2147483624 | Don't know | 0 |
0%
|
| 2147483625 | No answer | 0 |
0%
|
| 10001 | .D | 42058 |