| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1962 | 10 | 5 |
0%
|
|
| 1970 | 39 | 37 |
0.2%
|
|
| 1971 | 38 | 39 |
0.2%
|
|
| 1972 | 61 | 75 |
0.4%
|
|
| 1973 | 129 | 140 |
0.7%
|
|
| 1974 | 175 | 197 |
1%
|
|
| 1975 | 196 | 234 |
1.1%
|
|
| 1976 | 174 | 190 |
0.9%
|
|
| 1977 | 293 | 298 |
1.4%
|
|
| 1978 | 386 | 397 |
1.9%
|
|
| 1979 | 399 | 379 |
1.8%
|
|
| 1980 | 640 | 674 |
3.3%
|
|
| 1981 | 684 | 717 |
3.5%
|
|
| 1982 | 820 | 854 |
4.1%
|
|
| 1983 | 853 | 881 |
4.3%
|
|
| 1984 | 879 | 907 |
4.4%
|
|
| 1985 | 1026 | 1029 |
5%
|
|
| 1986 | 1030 | 1060 |
5.1%
|
|
| 1987 | 728 | 766 |
3.7%
|
|
| 1988 | 791 | 810 |
3.9%
|
|
| 1989 | 691 | 698 |
3.4%
|
|
| 1990 | 1029 | 1104 |
5.3%
|
|
| 1991 | 630 | 650 |
3.1%
|
|
| 1992 | 847 | 841 |
4.1%
|
|
| 1993 | 866 | 899 |
4.3%
|
|
| 1994 | 803 | 821 |
4%
|
|
| 1995 | 772 | 740 |
3.6%
|
|
| 1996 | 769 | 764 |
3.7%
|
|
| 1997 | 646 | 650 |
3.1%
|
|
| 1998 | 764 | 726 |
3.5%
|
|
| 1999 | 662 | 675 |
3.3%
|
|
| 2000 | 647 | 647 |
3.1%
|
|
| 2001 | 430 | 449 |
2.2%
|
|
| 2002 | 434 | 426 |
2.1%
|
|
| 2003 | 305 | 281 |
1.4%
|
|
| 2004 | 221 | 213 |
1%
|
|
| 2005 | 85 | 82 |
0.4%
|
|
| 2006 | 1 | 1 |
0%
|
|
| 9997 | Inconsistent | 0 | 0 |
0%
|
| 9998 | DK | 367 | 364 |
1.8%
|
| 9999 | 57 | 58 |