| Value | Category | Cases | |
|---|---|---|---|
| 1969 | 25 |
0.1%
|
|
| 1970 | 351 |
1.8%
|
|
| 1971 | 344 |
1.7%
|
|
| 1972 | 215 |
1.1%
|
|
| 1973 | 203 |
1%
|
|
| 1974 | 429 |
2.1%
|
|
| 1975 | 275 |
1.4%
|
|
| 1976 | 209 |
1%
|
|
| 1977 | 240 |
1.2%
|
|
| 1978 | 321 |
1.6%
|
|
| 1979 | 664 |
3.3%
|
|
| 1980 | 555 |
2.8%
|
|
| 1981 | 449 |
2.2%
|
|
| 1982 | 357 |
1.8%
|
|
| 1983 | 370 |
1.8%
|
|
| 1984 | 673 |
3.4%
|
|
| 1985 | 466 |
2.3%
|
|
| 1986 | 411 |
2%
|
|
| 1987 | 491 |
2.4%
|
|
| 1988 | 538 |
2.7%
|
|
| 1989 | 932 |
4.6%
|
|
| 1990 | 696 |
3.5%
|
|
| 1991 | 650 |
3.2%
|
|
| 1992 | 620 |
3.1%
|
|
| 1993 | 639 |
3.2%
|
|
| 1994 | 879 |
4.4%
|
|
| 1995 | 641 |
3.2%
|
|
| 1996 | 623 |
3.1%
|
|
| 1997 | 731 |
3.6%
|
|
| 1998 | 661 |
3.3%
|
|
| 1999 | 1071 |
5.3%
|
|
| 2000 | 865 |
4.3%
|
|
| 2001 | 930 |
4.6%
|
|
| 2002 | 770 |
3.8%
|
|
| 2003 | 780 |
3.9%
|
|
| 2004 | 795 |
4%
|
|
| 2005 | 52 |
0.3%
|
|
| 9997 | Inconsistent | 60 |
0.3%
|
| 9998 | DK YEAR | 76 |
0.4%
|
| 9999 | NO RESPONSE | 0 |
0%
|
| Sysmiss | 591 |