| Value | Category | Cases | |
|---|---|---|---|
| 1956 | 6 |
4.3%
|
|
| 1970 | 2 |
1.4%
|
|
| 1978 | 2 |
1.4%
|
|
| 1980 | 10 |
7.2%
|
|
| 1982 | 3 |
2.2%
|
|
| 1983 | 3 |
2.2%
|
|
| 1984 | 2 |
1.4%
|
|
| 1985 | 8 |
5.8%
|
|
| 1986 | 2 |
1.4%
|
|
| 1989 | 2 |
1.4%
|
|
| 1990 | 16 |
11.5%
|
|
| 1993 | 6 |
4.3%
|
|
| 1994 | 2 |
1.4%
|
|
| 1996 | 19 |
13.7%
|
|
| 1998 | 6 |
4.3%
|
|
| 1999 | 3 |
2.2%
|
|
| 2000 | 10 |
7.2%
|
|
| 2001 | 8 |
5.8%
|
|
| 2003 | 8 |
5.8%
|
|
| 2004 | 6 |
4.3%
|
|
| 2006 | 6 |
4.3%
|
|
| 2010 | 6 |
4.3%
|
|
| 2011 | 1 |
0.7%
|
|
| 2014 | 2 |
1.4%
|