| Value | Category | Cases | |
|---|---|---|---|
| 1973 | 1 |
1.5%
|
|
| 1980 | 2 |
3%
|
|
| 1981 | 1 |
1.5%
|
|
| 1982 | 1 |
1.5%
|
|
| 1983 | 1 |
1.5%
|
|
| 1984 | 1 |
1.5%
|
|
| 1985 | 1 |
1.5%
|
|
| 1989 | 1 |
1.5%
|
|
| 1991 | 1 |
1.5%
|
|
| 1992 | 3 |
4.5%
|
|
| 1997 | 1 |
1.5%
|
|
| 1998 | 2 |
3%
|
|
| 1999 | 1 |
1.5%
|
|
| 2000 | 3 |
4.5%
|
|
| 2001 | 1 |
1.5%
|
|
| 2002 | 3 |
4.5%
|
|
| 2004 | 2 |
3%
|
|
| 2005 | 3 |
4.5%
|
|
| 2007 | 2 |
3%
|
|
| 2008 | 1 |
1.5%
|
|
| 2009 | 1 |
1.5%
|
|
| 2010 | 6 |
9.1%
|
|
| 2011 | 2 |
3%
|
|
| 9997 | no sabe | 25 |
37.9%
|
| 9999 | no responde | 0 |
0%
|
| Sysmiss | 396 |