| Value | Category | Cases | |
|---|---|---|---|
| 0 | 3458 |
88.1%
|
|
| 1986 | 1 |
0%
|
|
| 1990 | 1 |
0%
|
|
| 1993 | 1 |
0%
|
|
| 1997 | 2 |
0.1%
|
|
| 2001 | 1 |
0%
|
|
| 2002 | 1 |
0%
|
|
| 2003 | 2 |
0.1%
|
|
| 2004 | 6 |
0.2%
|
|
| 2005 | 2 |
0.1%
|
|
| 2007 | 4 |
0.1%
|
|
| 2008 | 6 |
0.2%
|
|
| 2009 | 9 |
0.2%
|
|
| 2010 | 7 |
0.2%
|
|
| 2011 | 6 |
0.2%
|
|
| 2012 | 17 |
0.4%
|
|
| 2013 | 14 |
0.4%
|
|
| 2014 | 36 |
0.9%
|
|
| 2015 | 3 |
0.1%
|
|
| 8888 | 350 |
8.9%
|
|
| Sysmiss | 115 |