| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
0.1%
|
|
| 1982 | 1 |
0.1%
|
|
| 1988 | 2 |
0.3%
|
|
| 1989 | 1 |
0.1%
|
|
| 1990 | 2 |
0.3%
|
|
| 1991 | 2 |
0.3%
|
|
| 1992 | 2 |
0.3%
|
|
| 1993 | 4 |
0.5%
|
|
| 1994 | 7 |
0.9%
|
|
| 1995 | 13 |
1.7%
|
|
| 1996 | 8 |
1.1%
|
|
| 1997 | 9 |
1.2%
|
|
| 1998 | 18 |
2.4%
|
|
| 1999 | 12 |
1.6%
|
|
| 2000 | 22 |
3%
|
|
| 2001 | 10 |
1.3%
|
|
| 2002 | 18 |
2.4%
|
|
| 2003 | 29 |
3.9%
|
|
| 2004 | 28 |
3.8%
|
|
| 2005 | 41 |
5.5%
|
|
| 2006 | 32 |
4.3%
|
|
| 2007 | 49 |
6.6%
|
|
| 2008 | 65 |
8.7%
|
|
| 2009 | 54 |
7.3%
|
|
| 2010 | 97 |
13.1%
|
|
| 2011 | 74 |
10%
|
|
| 2012 | 70 |
9.4%
|
|
| 2013 | 37 |
5%
|
|
| 9998 | NSP | 35 |
4.7%
|
| Sysmiss | 9265 |