| Value | Category | Cases | |
|---|---|---|---|
| 0 | 4 |
2.8%
|
|
| 77 | 1 |
0.7%
|
|
| 2000 | 2 |
1.4%
|
|
| 2002 | 1 |
0.7%
|
|
| 2003 | 5 |
3.5%
|
|
| 2004 | 8 |
5.6%
|
|
| 2005 | 7 |
4.9%
|
|
| 2006 | 8 |
5.6%
|
|
| 2007 | 8 |
5.6%
|
|
| 2008 | 14 |
9.9%
|
|
| 2009 | 11 |
7.7%
|
|
| 2010 | 11 |
7.7%
|
|
| 2011 | 13 |
9.2%
|
|
| 2012 | 15 |
10.6%
|
|
| 2013 | 34 |
23.9%
|
|
| Sysmiss | 758 |