| Value | Category | Cases | |
|---|---|---|---|
| 1973 | 203 |
3.6%
|
|
| 1982 | 321 |
5.7%
|
|
| 1983 | 355 |
6.3%
|
|
| 1984 | 146 |
2.6%
|
|
| 1985 | 117 |
2.1%
|
|
| 1986 | 695 |
12.2%
|
|
| 1987 | 531 |
9.4%
|
|
| 1988 | 214 |
3.8%
|
|
| 1989 | 66 |
1.2%
|
|
| 1990 | 507 |
8.9%
|
|
| 1991 | 419 |
7.4%
|
|
| 1992 | 323 |
5.7%
|
|
| 1993 | 278 |
4.9%
|
|
| 1994 | 156 |
2.7%
|
|
| 1995 | 458 |
8.1%
|
|
| 1996 | 183 |
3.2%
|
|
| 1997 | 353 |
6.2%
|
|
| 1999 | 172 |
3%
|
|
| 2000 | 179 |
3.2%
|
|
| 3333 | Missing | 0 |
0%
|