| Value | Category | Cases | |
|---|---|---|---|
| 1968 | 15 |
0.2%
|
|
| 1969 | 204 |
2.4%
|
|
| 1970 | 215 |
2.5%
|
|
| 1971 | 215 |
2.5%
|
|
| 1972 | 200 |
2.3%
|
|
| 1973 | 213 |
2.5%
|
|
| 1974 | 212 |
2.5%
|
|
| 1975 | 215 |
2.5%
|
|
| 1976 | 213 |
2.5%
|
|
| 1977 | 196 |
2.3%
|
|
| 1978 | 218 |
2.6%
|
|
| 1979 | 229 |
2.7%
|
|
| 1980 | 211 |
2.5%
|
|
| 1981 | 226 |
2.7%
|
|
| 1982 | 227 |
2.7%
|
|
| 1983 | 219 |
2.6%
|
|
| 1984 | 242 |
2.8%
|
|
| 1985 | 240 |
2.8%
|
|
| 1986 | 262 |
3.1%
|
|
| 1987 | 234 |
2.7%
|
|
| 1988 | 222 |
2.6%
|
|
| 1989 | 225 |
2.6%
|
|
| 1990 | 268 |
3.1%
|
|
| 1991 | 237 |
2.8%
|
|
| 1992 | 219 |
2.6%
|
|
| 1993 | 179 |
2.1%
|
|
| 1994 | 168 |
2%
|
|
| 1995 | 139 |
1.6%
|
|
| 1996 | 152 |
1.8%
|
|
| 1997 | 152 |
1.8%
|
|
| 1998 | 103 |
1.2%
|
|
| 1999 | 96 |
1.1%
|
|
| 2000 | 116 |
1.4%
|
|
| 2001 | 107 |
1.3%
|
|
| 2002 | 126 |
1.5%
|
|
| 2003 | 94 |
1.1%
|
|
| 9998 | DK | 3 |
0%
|
| Sysmiss | 1699 |
20%
|