| Value | Category | Cases | |
|---|---|---|---|
| 1969 | 5 |
0.3%
|
|
| 1970 | 21 |
1.3%
|
|
| 1971 | 10 |
0.6%
|
|
| 1972 | 19 |
1.2%
|
|
| 1973 | 20 |
1.3%
|
|
| 1974 | 34 |
2.2%
|
|
| 1975 | 29 |
1.8%
|
|
| 1976 | 28 |
1.8%
|
|
| 1977 | 22 |
1.4%
|
|
| 1978 | 28 |
1.8%
|
|
| 1979 | 36 |
2.3%
|
|
| 1980 | 41 |
2.6%
|
|
| 1981 | 31 |
2%
|
|
| 1982 | 38 |
2.4%
|
|
| 1983 | 36 |
2.3%
|
|
| 1984 | 29 |
1.8%
|
|
| 1985 | 31 |
2%
|
|
| 1986 | 34 |
2.2%
|
|
| 1987 | 33 |
2.1%
|
|
| 1988 | 39 |
2.5%
|
|
| 1989 | 34 |
2.2%
|
|
| 1990 | 41 |
2.6%
|
|
| 1991 | 39 |
2.5%
|
|
| 1992 | 36 |
2.3%
|
|
| 1993 | 35 |
2.2%
|
|
| 1994 | 49 |
3.1%
|
|
| 1995 | 41 |
2.6%
|
|
| 1996 | 52 |
3.3%
|
|
| 1997 | 50 |
3.2%
|
|
| 1998 | 51 |
3.2%
|
|
| 1999 | 60 |
3.8%
|
|
| 2000 | 55 |
3.5%
|
|
| 2001 | 71 |
4.5%
|
|
| 2002 | 74 |
4.7%
|
|
| 2003 | 74 |
4.7%
|
|
| 2004 | 67 |
4.3%
|
|
| 9998 | NS | 2 |
0.1%
|
| Sysmiss | 175 |
11.1%
|