| Value | Category | Cases | |
|---|---|---|---|
| 0 | no sabe | 0 |
0%
|
| 1973 | 1 |
1%
|
|
| 1974 | 1 |
1%
|
|
| 1977 | 1 |
1%
|
|
| 1978 | 1 |
1%
|
|
| 1980 | 4 |
4%
|
|
| 1981 | 1 |
1%
|
|
| 1982 | 1 |
1%
|
|
| 1983 | 5 |
5%
|
|
| 1985 | 1 |
1%
|
|
| 1986 | 1 |
1%
|
|
| 1989 | 1 |
1%
|
|
| 1990 | 3 |
3%
|
|
| 1991 | 2 |
2%
|
|
| 1992 | 3 |
3%
|
|
| 1993 | 1 |
1%
|
|
| 1996 | 2 |
2%
|
|
| 1997 | 1 |
1%
|
|
| 1998 | 4 |
4%
|
|
| 1999 | 2 |
2%
|
|
| 2000 | 6 |
6%
|
|
| 2001 | 2 |
2%
|
|
| 2002 | 3 |
3%
|
|
| 2003 | 1 |
1%
|
|
| 2004 | 1 |
1%
|
|
| 2005 | 2 |
2%
|
|
| 2006 | 4 |
4%
|
|
| 2007 | 8 |
8%
|
|
| 2008 | 4 |
4%
|
|
| 2009 | 8 |
8%
|
|
| 2010 | 19 |
19%
|
|
| 2011 | 6 |
6%
|
|
| 9997 | no sabe | 0 |
0%
|
| 9999 | no responde | 0 |
0%
|
| Sysmiss | 362 |