| Valor | Categoría | Casos | |
|---|---|---|---|
| 1974 | 1 |
0.1%
|
|
| 1975 | 4 |
0.3%
|
|
| 1976 | 5 |
0.4%
|
|
| 1977 | 6 |
0.4%
|
|
| 1978 | 19 |
1.4%
|
|
| 1979 | 11 |
0.8%
|
|
| 1980 | 24 |
1.7%
|
|
| 1981 | 25 |
1.8%
|
|
| 1982 | 33 |
2.4%
|
|
| 1983 | 38 |
2.7%
|
|
| 1984 | 39 |
2.8%
|
|
| 1985 | 42 |
3%
|
|
| 1986 | 51 |
3.6%
|
|
| 1987 | 51 |
3.6%
|
|
| 1988 | 52 |
3.7%
|
|
| 1989 | 50 |
3.6%
|
|
| 1990 | 54 |
3.9%
|
|
| 1991 | 66 |
4.7%
|
|
| 1992 | 55 |
3.9%
|
|
| 1993 | 64 |
4.6%
|
|
| 1994 | 81 |
5.8%
|
|
| 1995 | 70 |
5%
|
|
| 1996 | 50 |
3.6%
|
|
| 1997 | 56 |
4%
|
|
| 1998 | 57 |
4.1%
|
|
| 1999 | 75 |
5.4%
|
|
| 2000 | 70 |
5%
|
|
| 2001 | 72 |
5.1%
|
|
| 2002 | 58 |
4.1%
|
|
| 2003 | 37 |
2.6%
|
|
| 2004 | 38 |
2.7%
|
|
| 2005 | 27 |
1.9%
|
|
| 2006 | 15 |
1.1%
|
|
| 2007 | 4 |
0.3%
|
|
| 9999 | Sin información | 30 |