| Value | Category | Cases | |
|---|---|---|---|
| 1964 | 1 |
0%
|
|
| 1972 | 1 |
0%
|
|
| 1973 | 1 |
0%
|
|
| 1974 | 1 |
0%
|
|
| 1975 | 2 |
0.1%
|
|
| 1977 | 1 |
0%
|
|
| 1980 | 1 |
0%
|
|
| 1981 | 4 |
0.2%
|
|
| 1982 | 3 |
0.1%
|
|
| 1983 | 7 |
0.3%
|
|
| 1984 | 7 |
0.3%
|
|
| 1985 | 11 |
0.5%
|
|
| 1986 | 8 |
0.4%
|
|
| 1987 | 17 |
0.8%
|
|
| 1988 | 29 |
1.4%
|
|
| 1989 | 19 |
0.9%
|
|
| 1990 | 40 |
2%
|
|
| 1991 | 37 |
1.8%
|
|
| 1992 | 48 |
2.3%
|
|
| 1993 | 95 |
4.6%
|
|
| 1994 | 106 |
5.2%
|
|
| 1995 | 135 |
6.6%
|
|
| 1996 | 154 |
7.5%
|
|
| 1997 | 188 |
9.2%
|
|
| 1998 | 273 |
13.3%
|
|
| 1999 | 541 |
26.4%
|
|
| 2000 | 318 |
15.5%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | dk | 1 |
0%
|
| Sysmiss | 13936 |