| Value | Category | Cases | |
|---|---|---|---|
| 1970 | 1 |
0%
|
|
| 1974 | 2 |
0%
|
|
| 1982 | 1 |
0%
|
|
| 1984 | 1 |
0%
|
|
| 1985 | 1 |
0%
|
|
| 1986 | 2 |
0%
|
|
| 1987 | 2 |
0%
|
|
| 1988 | 3 |
0.1%
|
|
| 1990 | 2 |
0%
|
|
| 1992 | 1 |
0%
|
|
| 1993 | 2 |
0%
|
|
| 1994 | 2 |
0%
|
|
| 1995 | 11 |
0.3%
|
|
| 1996 | 12 |
0.3%
|
|
| 1997 | 14 |
0.3%
|
|
| 1998 | 17 |
0.4%
|
|
| 1999 | 19 |
0.5%
|
|
| 2000 | 53 |
1.3%
|
|
| 2001 | 36 |
0.9%
|
|
| 2002 | 29 |
0.7%
|
|
| 2003 | 49 |
1.2%
|
|
| 2004 | 41 |
1%
|
|
| 2005 | 91 |
2.3%
|
|
| 2006 | 96 |
2.4%
|
|
| 2007 | 221 |
5.5%
|
|
| 2008 | 345 |
8.6%
|
|
| 2009 | 514 |
12.8%
|
|
| 2010 | 679 |
16.9%
|
|
| 2011 | 1684 |
42%
|
|
| 2012 | 74 |
1.8%
|
|
| 9999 | Missing value | 7 |
0.2%
|