| value | category | cases | |
|---|---|---|---|
| 1968 | 1 |
0.1%
|
|
| 1969 | 1 |
0.1%
|
|
| 1970 | 1 |
0.1%
|
|
| 1971 | 1 |
0.1%
|
|
| 1972 | 1 |
0.1%
|
|
| 1973 | 3 |
0.2%
|
|
| 1974 | 7 |
0.4%
|
|
| 1975 | 10 |
0.6%
|
|
| 1976 | 4 |
0.2%
|
|
| 1977 | 12 |
0.7%
|
|
| 1978 | 7 |
0.4%
|
|
| 1979 | 19 |
1.1%
|
|
| 1980 | 19 |
1.1%
|
|
| 1981 | 16 |
0.9%
|
|
| 1982 | 29 |
1.7%
|
|
| 1983 | 31 |
1.8%
|
|
| 1984 | 26 |
1.5%
|
|
| 1985 | 29 |
1.7%
|
|
| 1986 | 34 |
2%
|
|
| 1987 | 29 |
1.7%
|
|
| 1988 | 49 |
2.9%
|
|
| 1989 | 39 |
2.3%
|
|
| 1990 | 47 |
2.8%
|
|
| 1991 | 49 |
2.9%
|
|
| 1992 | 49 |
2.9%
|
|
| 1993 | 65 |
3.8%
|
|
| 1994 | 68 |
4%
|
|
| 1995 | 95 |
5.6%
|
|
| 1996 | 104 |
6.1%
|
|
| 1997 | 98 |
5.7%
|
|
| 1998 | 121 |
7.1%
|
|
| 1999 | 124 |
7.3%
|
|
| 2000 | 133 |
7.8%
|
|
| 2001 | 119 |
7%
|
|
| 2002 | 126 |
7.4%
|
|
| 2003 | 139 |
8.1%
|
|
| 9997 | Inconsistent | 1 |
0.1%
|
| 9998 | DK | 0 |
0%
|
| 9999 | 2 | ||
| Sysmiss | 10769 |