| Value | Category | Cases | |
|---|---|---|---|
| 1985 | 1 |
0%
|
|
| 1990 | 1 |
0%
|
|
| 1994 | 1 |
0%
|
|
| 1995 | 1 |
0%
|
|
| 1996 | 1 |
0%
|
|
| 1997 | 2 |
0%
|
|
| 1998 | 7 |
0.1%
|
|
| 1999 | 9 |
0.1%
|
|
| 2000 | 35 |
0.3%
|
|
| 2001 | 54 |
0.4%
|
|
| 2002 | 138 |
1.1%
|
|
| 2003 | 580 |
4.6%
|
|
| 2004 | 1847 |
14.8%
|
|
| 2005 | 2621 |
21%
|
|
| 2006 | 3353 |
26.8%
|
|
| 2007 | 2395 |
19.2%
|
|
| 2008 | 1344 |
10.8%
|
|
| 2009 | 103 |
0.8%
|
