| Value | Category | Cases | |
|---|---|---|---|
| 20 | 1 |
0.1%
|
|
| 1958 | 1 |
0.1%
|
|
| 1972 | 1 |
0.1%
|
|
| 1974 | 1 |
0.1%
|
|
| 1976 | 1 |
0.1%
|
|
| 1978 | 2 |
0.2%
|
|
| 1979 | 2 |
0.2%
|
|
| 1980 | 2 |
0.2%
|
|
| 1983 | 1 |
0.1%
|
|
| 1984 | 3 |
0.4%
|
|
| 1985 | 4 |
0.5%
|
|
| 1986 | 5 |
0.6%
|
|
| 1987 | 3 |
0.4%
|
|
| 1988 | 5 |
0.6%
|
|
| 1989 | 3 |
0.4%
|
|
| 1990 | 19 |
2.3%
|
|
| 1991 | 2 |
0.2%
|
|
| 1992 | 8 |
1%
|
|
| 1993 | 8 |
1%
|
|
| 1994 | 14 |
1.7%
|
|
| 1995 | 16 |
2%
|
|
| 1996 | 13 |
1.6%
|
|
| 1997 | 15 |
1.8%
|
|
| 1998 | 19 |
2.3%
|
|
| 1999 | 16 |
2%
|
|
| 2000 | 41 |
5%
|
|
| 2001 | 19 |
2.3%
|
|
| 2002 | 37 |
4.5%
|
|
| 2003 | 31 |
3.8%
|
|
| 2004 | 49 |
6%
|
|
| 2005 | 65 |
7.9%
|
|
| 2006 | 73 |
8.9%
|
|
| 2007 | 95 |
11.6%
|
|
| 2008 | 119 |
14.5%
|
|
| 2009 | 96 |
11.7%
|
|
| 2010 | 30 |
3.7%
|
|
| Sysmiss | 1 |