| Value | Category | Cases | |
|---|---|---|---|
| 99 | Missing | 0 |
0%
|
| 1990 | 1 |
0.3%
|
|
| 1992 | 1 |
0.3%
|
|
| 1997 | 1 |
0.3%
|
|
| 2000 | 8 |
2.6%
|
|
| 2001 | 5 |
1.6%
|
|
| 2002 | 1 |
0.3%
|
|
| 2003 | 4 |
1.3%
|
|
| 2004 | 12 |
3.8%
|
|
| 2005 | 11 |
3.5%
|
|
| 2006 | 6 |
1.9%
|
|
| 2007 | 11 |
3.5%
|
|
| 2008 | 27 |
8.6%
|
|
| 2009 | 31 |
9.9%
|
|
| 2010 | 51 |
16.3%
|
|
| 2011 | 61 |
19.5%
|
|
| 2012 | 69 |
22%
|
|
| 2013 | 13 |
4.2%
|
|
| Sysmiss | 1412 |