| Value | Category | Cases | |
|---|---|---|---|
| 99 | ND | 0 |
0%
|
| 1989 | 1 |
1.8%
|
|
| 1990 | 2 |
3.5%
|
|
| 1995 | 2 |
3.5%
|
|
| 1996 | 2 |
3.5%
|
|
| 1997 | 1 |
1.8%
|
|
| 1998 | 1 |
1.8%
|
|
| 2000 | 4 |
7%
|
|
| 2002 | 4 |
7%
|
|
| 2003 | 1 |
1.8%
|
|
| 2004 | 1 |
1.8%
|
|
| 2005 | 5 |
8.8%
|
|
| 2006 | 3 |
5.3%
|
|
| 2007 | 3 |
5.3%
|
|
| 2008 | 1 |
1.8%
|
|
| 2009 | 2 |
3.5%
|
|
| 2010 | 9 |
15.8%
|
|
| 2011 | 7 |
12.3%
|
|
| 2012 | 2 |
3.5%
|
|
| 2013 | 6 |
10.5%
|
|
| Sysmiss | 1443 |