| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1955 | 1 | 3 |
0.2%
|
|
| 1963 | 1 | 1 |
0.1%
|
|
| 1969 | 1 | 1 |
0.1%
|
|
| 1970 | 2 | 2 |
0.2%
|
|
| 1971 | 2 | 1 |
0.1%
|
|
| 1972 | 1 | 1 |
0.1%
|
|
| 1974 | 1 | 3 |
0.3%
|
|
| 1975 | 4 | 2 |
0.2%
|
|
| 1976 | 2 | 2 |
0.2%
|
|
| 1977 | 3 | 3 |
0.3%
|
|
| 1978 | 3 | 5 |
0.5%
|
|
| 1979 | 8 | 8 |
0.7%
|
|
| 1980 | 6 | 11 |
1.1%
|
|
| 1981 | 8 | 6 |
0.5%
|
|
| 1982 | 7 | 5 |
0.5%
|
|
| 1983 | 11 | 16 |
1.5%
|
|
| 1984 | 9 | 10 |
1%
|
|
| 1985 | 5 | 7 |
0.7%
|
|
| 1986 | 8 | 8 |
0.8%
|
|
| 1987 | 5 | 8 |
0.7%
|
|
| 1988 | 3 | 1 |
0.1%
|
|
| 1989 | 14 | 17 |
1.7%
|
|
| 1990 | 12 | 10 |
1%
|
|
| 1991 | 8 | 8 |
0.8%
|
|
| 1992 | 8 | 6 |
0.5%
|
|
| 1993 | 9 | 6 |
0.6%
|
|
| 1994 | 58 | 72 |
6.9%
|
|
| 1995 | 80 | 78 |
7.5%
|
|
| 1996 | 62 | 59 |
5.7%
|
|
| 1997 | 85 | 90 |
8.6%
|
|
| 1998 | 113 | 116 |
11.2%
|
|
| 1999 | 149 | 158 |
15.3%
|
|
| 2000 | 147 | 136 |
13.1%
|
|
| 2001 | 200 | 176 |
16.9%
|
|
| 9998 | NSP | 0 | 0 |
0%
|
| 9999 | 2 | 1 | ||
| Sysmiss | 4 | 0 |