| Value | Category | Cases | |
|---|---|---|---|
| 1972 | 12 |
0.1%
|
|
| 1973 | 154 |
1.2%
|
|
| 1974 | 194 |
1.5%
|
|
| 1975 | 237 |
1.8%
|
|
| 1976 | 189 |
1.4%
|
|
| 1977 | 254 |
1.9%
|
|
| 1978 | 187 |
1.4%
|
|
| 1979 | 227 |
1.7%
|
|
| 1980 | 310 |
2.4%
|
|
| 1981 | 164 |
1.2%
|
|
| 1982 | 346 |
2.6%
|
|
| 1983 | 296 |
2.2%
|
|
| 1984 | 310 |
2.4%
|
|
| 1985 | 309 |
2.3%
|
|
| 1986 | 303 |
2.3%
|
|
| 1987 | 310 |
2.4%
|
|
| 1988 | 315 |
2.4%
|
|
| 1989 | 282 |
2.1%
|
|
| 1990 | 318 |
2.4%
|
|
| 1991 | 246 |
1.9%
|
|
| 1992 | 443 |
3.4%
|
|
| 1993 | 340 |
2.6%
|
|
| 1994 | 467 |
3.5%
|
|
| 1995 | 415 |
3.1%
|
|
| 1996 | 412 |
3.1%
|
|
| 1997 | 447 |
3.4%
|
|
| 1998 | 399 |
3%
|
|
| 1999 | 477 |
3.6%
|
|
| 2000 | 687 |
5.2%
|
|
| 2001 | 435 |
3.3%
|
|
| 2002 | 637 |
4.8%
|
|
| 2003 | 672 |
5.1%
|
|
| 2004 | 678 |
5.1%
|
|
| 2005 | 576 |
4.4%
|
|
| 2006 | 601 |
4.6%
|
|
| 2007 | 528 |
4%
|
|
| 2008 | 6 |
0%
|
|
| Sysmiss | 793 |