| Value | Category | Cases | |
|---|---|---|---|
| 99 | ND | 0 |
0%
|
| 1989 | 1 |
3.2%
|
|
| 1993 | 2 |
6.5%
|
|
| 2001 | 1 |
3.2%
|
|
| 2003 | 1 |
3.2%
|
|
| 2004 | 2 |
6.5%
|
|
| 2005 | 1 |
3.2%
|
|
| 2008 | 2 |
6.5%
|
|
| 2009 | 2 |
6.5%
|
|
| 2010 | 3 |
9.7%
|
|
| 2011 | 1 |
3.2%
|
|
| 2012 | 6 |
19.4%
|
|
| 2013 | 9 |
29%
|
|
| Sysmiss | 1469 |