| Value | Category | Cases | |
|---|---|---|---|
| 99 | Missing | 1 |
0.5%
|
| 1996 | 1 |
0.5%
|
|
| 1998 | 1 |
0.5%
|
|
| 1999 | 1 |
0.5%
|
|
| 2000 | 5 |
2.3%
|
|
| 2001 | 2 |
0.9%
|
|
| 2002 | 3 |
1.4%
|
|
| 2003 | 2 |
0.9%
|
|
| 2004 | 4 |
1.8%
|
|
| 2005 | 9 |
4.1%
|
|
| 2006 | 11 |
5%
|
|
| 2007 | 12 |
5.5%
|
|
| 2008 | 24 |
11%
|
|
| 2009 | 26 |
11.9%
|
|
| 2010 | 37 |
16.9%
|
|
| 2011 | 40 |
18.3%
|
|
| 2012 | 36 |
16.4%
|
|
| 2013 | 4 |
1.8%
|
|
| Sysmiss | 1506 |