| Value | Category | Cases | |
|---|---|---|---|
| 1971 | 31 |
0.2%
|
|
| 1972 | 274 |
1.6%
|
|
| 1973 | 345 |
2%
|
|
| 1974 | 256 |
1.5%
|
|
| 1975 | 281 |
1.6%
|
|
| 1976 | 577 |
3.3%
|
|
| 1977 | 183 |
1.1%
|
|
| 1978 | 317 |
1.8%
|
|
| 1979 | 378 |
2.2%
|
|
| 1980 | 337 |
1.9%
|
|
| 1981 | 624 |
3.6%
|
|
| 1982 | 305 |
1.8%
|
|
| 1983 | 335 |
1.9%
|
|
| 1984 | 348 |
2%
|
|
| 1985 | 358 |
2.1%
|
|
| 1986 | 665 |
3.8%
|
|
| 1987 | 284 |
1.6%
|
|
| 1988 | 295 |
1.7%
|
|
| 1989 | 401 |
2.3%
|
|
| 1990 | 335 |
1.9%
|
|
| 1991 | 641 |
3.7%
|
|
| 1992 | 335 |
1.9%
|
|
| 1993 | 417 |
2.4%
|
|
| 1994 | 434 |
2.5%
|
|
| 1995 | 399 |
2.3%
|
|
| 1996 | 752 |
4.3%
|
|
| 1997 | 358 |
2.1%
|
|
| 1998 | 503 |
2.9%
|
|
| 1999 | 566 |
3.3%
|
|
| 2000 | 658 |
3.8%
|
|
| 2001 | 913 |
5.3%
|
|
| 2002 | 652 |
3.8%
|
|
| 2003 | 998 |
5.8%
|
|
| 2004 | 800 |
4.6%
|
|
| 2005 | 907 |
5.2%
|
|
| 2006 | 1073 |
6.2%
|
|
| 9998 | DK | 12 |
0.1%
|
| 9999 | NO RESPONSE | 0 |
0%
|
| Sysmiss | 1119 |