| Value | Category | Cases | |
|---|---|---|---|
| 1969 | 21 |
0.6%
|
|
| 1970 | 49 |
1.5%
|
|
| 1971 | 27 |
0.8%
|
|
| 1972 | 44 |
1.4%
|
|
| 1973 | 56 |
1.7%
|
|
| 1974 | 57 |
1.8%
|
|
| 1975 | 71 |
2.2%
|
|
| 1976 | 52 |
1.6%
|
|
| 1977 | 75 |
2.3%
|
|
| 1978 | 72 |
2.2%
|
|
| 1979 | 82 |
2.5%
|
|
| 1980 | 85 |
2.6%
|
|
| 1981 | 98 |
3%
|
|
| 1982 | 85 |
2.6%
|
|
| 1983 | 90 |
2.8%
|
|
| 1984 | 89 |
2.7%
|
|
| 1985 | 92 |
2.8%
|
|
| 1986 | 90 |
2.8%
|
|
| 1987 | 85 |
2.6%
|
|
| 1988 | 69 |
2.1%
|
|
| 1989 | 75 |
2.3%
|
|
| 1990 | 98 |
3%
|
|
| 1991 | 96 |
3%
|
|
| 1992 | 84 |
2.6%
|
|
| 1993 | 69 |
2.1%
|
|
| 1994 | 90 |
2.8%
|
|
| 1995 | 91 |
2.8%
|
|
| 1996 | 77 |
2.4%
|
|
| 1997 | 102 |
3.1%
|
|
| 1998 | 119 |
3.7%
|
|
| 1999 | 116 |
3.6%
|
|
| 2000 | 130 |
4%
|
|
| 2001 | 151 |
4.7%
|
|
| 2002 | 159 |
4.9%
|
|
| 2003 | 149 |
4.6%
|
|
| 2004 | 117 |
3.6%
|
|
| 9998 | NS | 3 |
0.1%
|
| Sysmiss | 129 |
4%
|