| Value | Category | Cases | |
|---|---|---|---|
| 1976 | 1 |
2.6%
|
|
| 1981 | 1 |
2.6%
|
|
| 1982 | 1 |
2.6%
|
|
| 1984 | 1 |
2.6%
|
|
| 1985 | 2 |
5.1%
|
|
| 1986 | 1 |
2.6%
|
|
| 1987 | 1 |
2.6%
|
|
| 1988 | 1 |
2.6%
|
|
| 1991 | 1 |
2.6%
|
|
| 1992 | 3 |
7.7%
|
|
| 1994 | 1 |
2.6%
|
|
| 1995 | 2 |
5.1%
|
|
| 1998 | 1 |
2.6%
|
|
| 1999 | 1 |
2.6%
|
|
| 2000 | 2 |
5.1%
|
|
| 2002 | 1 |
2.6%
|
|
| 2003 | 1 |
2.6%
|
|
| 2005 | 1 |
2.6%
|
|
| 2006 | 2 |
5.1%
|
|
| 2007 | 2 |
5.1%
|
|
| 2008 | 3 |
7.7%
|
|
| 2009 | 4 |
10.3%
|
|
| 2010 | 1 |
2.6%
|
|
| 2011 | 3 |
7.7%
|
|
| 2012 | 1 |
2.6%
|
|
| Sysmiss | 121651 |