| Value | Category | Cases | |
|---|---|---|---|
| 2 | 1 |
0.1%
|
|
| 1974 | 1 |
0.1%
|
|
| 1975 | 1 |
0.1%
|
|
| 1980 | 1 |
0.1%
|
|
| 1982 | 1 |
0.1%
|
|
| 1984 | 2 |
0.1%
|
|
| 1985 | 3 |
0.2%
|
|
| 1986 | 2 |
0.1%
|
|
| 1987 | 1 |
0.1%
|
|
| 1988 | 2 |
0.1%
|
|
| 1989 | 2 |
0.1%
|
|
| 1990 | 5 |
0.3%
|
|
| 1993 | 1 |
0.1%
|
|
| 1994 | 4 |
0.3%
|
|
| 1995 | 3 |
0.2%
|
|
| 1997 | 3 |
0.2%
|
|
| 1998 | 10 |
0.6%
|
|
| 1999 | 11 |
0.7%
|
|
| 2000 | 20 |
1.3%
|
|
| 2001 | 27 |
1.7%
|
|
| 2002 | 20 |
1.3%
|
|
| 2003 | 40 |
2.5%
|
|
| 2004 | 41 |
2.6%
|
|
| 2005 | 59 |
3.7%
|
|
| 2006 | 99 |
6.2%
|
|
| 2007 | 199 |
12.5%
|
|
| 2008 | 362 |
22.7%
|
|
| 2009 | 670 |
42%
|
|
| 2010 | 6 |
0.4%
|
|
| 9999 | Unknown | 0 |
0%
|
| Sysmiss | 6978 |