| Value | Category | Cases | |
|---|---|---|---|
| 1960 | 1 |
0.5%
|
|
| 1964 | 1 |
0.5%
|
|
| 1977 | 1 |
0.5%
|
|
| 1978 | 1 |
0.5%
|
|
| 1980 | 1 |
0.5%
|
|
| 1982 | 2 |
1%
|
|
| 1983 | 1 |
0.5%
|
|
| 1985 | 4 |
2.1%
|
|
| 1986 | 2 |
1%
|
|
| 1987 | 1 |
0.5%
|
|
| 1988 | 3 |
1.6%
|
|
| 1989 | 7 |
3.7%
|
|
| 1990 | 16 |
8.4%
|
|
| 1991 | 3 |
1.6%
|
|
| 1992 | 18 |
9.4%
|
|
| 1993 | 16 |
8.4%
|
|
| 1994 | 8 |
4.2%
|
|
| 1995 | 13 |
6.8%
|
|
| 1996 | 2 |
1%
|
|
| 1997 | 11 |
5.8%
|
|
| 1998 | 8 |
4.2%
|
|
| 1999 | 1 |
0.5%
|
|
| 2000 | 27 |
14.1%
|
|
| 2001 | 4 |
2.1%
|
|
| 2002 | 6 |
3.1%
|
|
| 2003 | 17 |
8.9%
|
|
| 2004 | 2 |
1%
|
|
| 2005 | 10 |
5.2%
|
|
| 2006 | 3 |
1.6%
|
|
| 2007 | 1 |
0.5%
|
|
| Sysmiss | 5143 |