| Value | Category | Cases | |
|---|---|---|---|
| 1973 | 1 |
0%
|
|
| 1974 | 3 |
0%
|
|
| 1975 | 3 |
0%
|
|
| 1976 | 3 |
0%
|
|
| 1977 | 11 |
0.1%
|
|
| 1978 | 10 |
0.1%
|
|
| 1979 | 19 |
0.1%
|
|
| 1980 | 30 |
0.2%
|
|
| 1981 | 33 |
0.3%
|
|
| 1982 | 44 |
0.3%
|
|
| 1983 | 29 |
0.2%
|
|
| 1984 | 59 |
0.5%
|
|
| 1985 | 73 |
0.6%
|
|
| 1986 | 63 |
0.5%
|
|
| 1987 | 64 |
0.5%
|
|
| 1988 | 69 |
0.5%
|
|
| 1989 | 82 |
0.6%
|
|
| 1990 | 110 |
0.8%
|
|
| 1991 | 102 |
0.8%
|
|
| 1992 | 100 |
0.8%
|
|
| 1993 | 96 |
0.7%
|
|
| 1994 | 131 |
1%
|
|
| 1995 | 150 |
1.1%
|
|
| 1996 | 136 |
1%
|
|
| 1997 | 177 |
1.4%
|
|
| 1998 | 217 |
1.7%
|
|
| 1999 | 253 |
1.9%
|
|
| 2000 | 371 |
2.8%
|
|
| 2001 | 353 |
2.7%
|
|
| 2002 | 411 |
3.1%
|
|
| 2003 | 454 |
3.5%
|
|
| 2004 | 526 |
4%
|
|
| 2005 | 671 |
5.1%
|
|
| 2006 | 737 |
5.6%
|
|
| 2007 | 930 |
7.1%
|
|
| 2008 | 1059 |
8.1%
|
|
| 2009 | 1360 |
10.4%
|
|
| 2010 | 1893 |
14.5%
|
|
| 2011 | 1940 |
14.9%
|
|
| 9997 | 9997. Inconsistent | 69 |
0.5%
|
| 9999 | 9999. Unspecified | 218 |
1.7%
|
| Sysmiss | 4405534 |