| Value | Category | Cases | |
|---|---|---|---|
| 1968 | 16 |
0.3%
|
|
| 1969 | 107 |
1.9%
|
|
| 1970 | 129 |
2.3%
|
|
| 1971 | 99 |
1.8%
|
|
| 1972 | 123 |
2.2%
|
|
| 1973 | 122 |
2.2%
|
|
| 1974 | 149 |
2.7%
|
|
| 1975 | 160 |
2.9%
|
|
| 1976 | 120 |
2.2%
|
|
| 1977 | 124 |
2.2%
|
|
| 1978 | 129 |
2.3%
|
|
| 1979 | 124 |
2.2%
|
|
| 1980 | 150 |
2.7%
|
|
| 1981 | 147 |
2.7%
|
|
| 1982 | 127 |
2.3%
|
|
| 1983 | 140 |
2.5%
|
|
| 1984 | 137 |
2.5%
|
|
| 1985 | 137 |
2.5%
|
|
| 1986 | 150 |
2.7%
|
|
| 1987 | 169 |
3.1%
|
|
| 1988 | 193 |
3.5%
|
|
| 1989 | 149 |
2.7%
|
|
| 1990 | 154 |
2.8%
|
|
| 1991 | 138 |
2.5%
|
|
| 1992 | 129 |
2.3%
|
|
| 1993 | 97 |
1.8%
|
|
| 1994 | 97 |
1.8%
|
|
| 1995 | 112 |
2%
|
|
| 1996 | 93 |
1.7%
|
|
| 1997 | 79 |
1.4%
|
|
| 1998 | 89 |
1.6%
|
|
| 1999 | 73 |
1.3%
|
|
| 2000 | 91 |
1.7%
|
|
| 2001 | 138 |
2.5%
|
|
| 2002 | 152 |
2.8%
|
|
| 2003 | 133 |
2.4%
|
|
| 9998 | DK YEAR | 1 |
0%
|
| Sysmiss | 1036 |
18.8%
|