| Value | Category | Cases | |
|---|---|---|---|
| 1963 | 1 |
1%
|
|
| 1969 | 1 |
1%
|
|
| 1970 | 2 |
2.1%
|
|
| 1978 | 1 |
1%
|
|
| 1980 | 1 |
1%
|
|
| 1981 | 1 |
1%
|
|
| 1983 | 1 |
1%
|
|
| 1984 | 1 |
1%
|
|
| 1985 | 2 |
2.1%
|
|
| 1987 | 1 |
1%
|
|
| 1992 | 1 |
1%
|
|
| 1993 | 1 |
1%
|
|
| 1994 | 1 |
1%
|
|
| 1995 | 6 |
6.2%
|
|
| 1996 | 9 |
9.3%
|
|
| 1997 | 4 |
4.1%
|
|
| 1998 | 3 |
3.1%
|
|
| 1999 | 4 |
4.1%
|
|
| 2000 | 13 |
13.4%
|
|
| 2001 | 9 |
9.3%
|
|
| 2002 | 7 |
7.2%
|
|
| 2003 | 16 |
16.5%
|
|
| 2004 | 5 |
5.2%
|
|
| 2005 | 6 |
6.2%
|