| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
4%
|
|
| 1984 | 1 |
4%
|
|
| 1990 | 1 |
4%
|
|
| 1992 | 1 |
4%
|
|
| 1994 | 1 |
4%
|
|
| 1995 | 1 |
4%
|
|
| 1998 | 2 |
8%
|
|
| 2000 | 2 |
8%
|
|
| 2001 | 1 |
4%
|
|
| 2002 | 1 |
4%
|
|
| 2003 | 1 |
4%
|
|
| 2004 | 2 |
8%
|
|
| 2005 | 1 |
4%
|
|
| 2010 | 1 |
4%
|
|
| 2011 | 1 |
4%
|
|
| 2014 | 2 |
8%
|
|
| 2015 | 1 |
4%
|
|
| 2016 | 3 |
12%
|
|
| 2017 | 1 |
4%
|
|
| Sysmiss | 2613 |