| Value | Category | Cases | |
|---|---|---|---|
| 1969 | 34 |
0.5%
|
|
| 1970 | 125 |
1.9%
|
|
| 1971 | 131 |
2%
|
|
| 1972 | 140 |
2.1%
|
|
| 1973 | 123 |
1.9%
|
|
| 1974 | 148 |
2.3%
|
|
| 1975 | 158 |
2.4%
|
|
| 1976 | 131 |
2%
|
|
| 1977 | 130 |
2%
|
|
| 1978 | 142 |
2.2%
|
|
| 1979 | 119 |
1.8%
|
|
| 1980 | 129 |
2%
|
|
| 1981 | 147 |
2.2%
|
|
| 1982 | 157 |
2.4%
|
|
| 1983 | 136 |
2.1%
|
|
| 1984 | 124 |
1.9%
|
|
| 1985 | 129 |
2%
|
|
| 1986 | 135 |
2.1%
|
|
| 1987 | 161 |
2.4%
|
|
| 1988 | 155 |
2.4%
|
|
| 1989 | 171 |
2.6%
|
|
| 1990 | 171 |
2.6%
|
|
| 1991 | 192 |
2.9%
|
|
| 1992 | 223 |
3.4%
|
|
| 1993 | 222 |
3.4%
|
|
| 1994 | 206 |
3.1%
|
|
| 1995 | 220 |
3.3%
|
|
| 1996 | 228 |
3.5%
|
|
| 1997 | 236 |
3.6%
|
|
| 1998 | 211 |
3.2%
|
|
| 1999 | 218 |
3.3%
|
|
| 2000 | 200 |
3%
|
|
| 2001 | 202 |
3.1%
|
|
| 2002 | 194 |
3%
|
|
| 2003 | 194 |
3%
|
|
| 2004 | 135 |
2.1%
|
|
| 9998 | DK | 5 |
0.1%
|
| 9999 | NO RESPONSE | 5 |
0.1%
|
| Sysmiss | 689 |
10.5%
|