| Value | Category | Cases | |
|---|---|---|---|
| 1977 | 1 |
0%
|
|
| 1980 | 4 |
0%
|
|
| 1981 | 11 |
0.1%
|
|
| 1982 | 11 |
0.1%
|
|
| 1983 | 17 |
0.1%
|
|
| 1984 | 22 |
0.1%
|
|
| 1985 | 33 |
0.2%
|
|
| 1986 | 56 |
0.4%
|
|
| 1987 | 49 |
0.3%
|
|
| 1988 | 79 |
0.5%
|
|
| 1989 | 102 |
0.7%
|
|
| 1990 | 163 |
1.1%
|
|
| 1991 | 193 |
1.3%
|
|
| 1992 | 226 |
1.5%
|
|
| 1993 | 317 |
2.1%
|
|
| 1994 | 297 |
1.9%
|
|
| 1995 | 432 |
2.8%
|
|
| 1996 | 451 |
3%
|
|
| 1997 | 541 |
3.5%
|
|
| 1998 | 581 |
3.8%
|
|
| 1999 | 603 |
4%
|
|
| 2000 | 726 |
4.8%
|
|
| 2001 | 790 |
5.2%
|
|
| 2002 | 882 |
5.8%
|
|
| 2003 | 966 |
6.3%
|
|
| 2004 | 1008 |
6.6%
|
|
| 2005 | 1117 |
7.3%
|
|
| 2006 | 986 |
6.5%
|
|
| 2007 | 971 |
6.4%
|
|
| 2008 | 1002 |
6.6%
|
|
| 2009 | 923 |
6%
|
|
| 2010 | 934 |
6.1%
|
|
| 2011 | 412 |
2.7%
|
|
| 9997 | Inconsistent | 34 |
0.2%
|
| 9998 | Dont Know | 0 |
0%
|
| 9999 | Missing | 325 |
2.1%
|