| Value | Category | Cases | |
|---|---|---|---|
| 1962 | 5 |
0%
|
|
| 1965 | 13 |
0%
|
|
| 1968 | 20 |
0%
|
|
| 1969 | 9 |
0%
|
|
| 1970 | 34 |
0.1%
|
|
| 1971 | 10 |
0%
|
|
| 1972 | 117 |
0.3%
|
|
| 1973 | 41 |
0.1%
|
|
| 1974 | 122 |
0.3%
|
|
| 1975 | 212 |
0.5%
|
|
| 1976 | 256 |
0.6%
|
|
| 1977 | 414 |
1%
|
|
| 1978 | 630 |
1.6%
|
|
| 1979 | 705 |
1.7%
|
|
| 1980 | 1134 |
2.8%
|
|
| 1981 | 824 |
2%
|
|
| 1982 | 951 |
2.4%
|
|
| 1983 | 934 |
2.3%
|
|
| 1984 | 931 |
2.3%
|
|
| 1985 | 1101 |
2.7%
|
|
| 1986 | 1133 |
2.8%
|
|
| 1987 | 1171 |
2.9%
|
|
| 1988 | 1293 |
3.2%
|
|
| 1989 | 1296 |
3.2%
|
|
| 1990 | 1549 |
3.8%
|
|
| 1991 | 1189 |
2.9%
|
|
| 1992 | 1294 |
3.2%
|
|
| 1993 | 1385 |
3.4%
|
|
| 1994 | 1520 |
3.8%
|
|
| 1995 | 1626 |
4%
|
|
| 1996 | 1481 |
3.7%
|
|
| 1997 | 1540 |
3.8%
|
|
| 1998 | 1602 |
4%
|
|
| 1999 | 1561 |
3.9%
|
|
| 2000 | 1582 |
3.9%
|
|
| 2001 | 1220 |
3%
|
|
| 2002 | 1298 |
3.2%
|
|
| 2003 | 1223 |
3%
|
|
| 2004 | 1015 |
2.5%
|
|
| 2005 | 914 |
2.3%
|
|
| 2006 | 769 |
1.9%
|
|
| 2007 | 606 |
1.5%
|
|
| 2008 | 125 |
0.3%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | DK | 3520 |
8.7%
|
| 9999 | Missing | 24 |
0.1%
|
| Sysmiss | 1407 |