| Value | Category | Cases | |
|---|---|---|---|
| -5 | missing; unknown | 0 |
0%
|
| -4 | not asked in survey | 0 |
0%
|
| -3 | not applicable | 0 |
0%
|
| -2 | no answer | 0 |
0%
|
| -1 | don´t know | 0 |
0%
|
| 1981 | 1981 | 5272 |
2%
|
| 1982 | 1982 | 4030 |
1.6%
|
| 1984 | 1984 | 1005 |
0.4%
|
| 1989 | 1989 | 2338 |
0.9%
|
| 1990 | 1990 | 19436 |
7.5%
|
| 1991 | 1991 | 2784 |
1.1%
|
| 1992 | 1992 | 0 |
0%
|
| 1993 | 1993 | 0 |
0%
|
| 1994 | 1994 | 780 |
0.3%
|
| 1995 | 1995 | 16681 |
6.5%
|
| 1996 | 1996 | 33175 |
12.9%
|
| 1997 | 1997 | 14173 |
5.5%
|
| 1998 | 1998 | 12615 |
4.9%
|
| 1999 | 1999 | 4749 |
1.8%
|
| 2000 | 2000 | 15991 |
6.2%
|
| 2001 | 2001 | 30404 |
11.8%
|
| 2002 | 2002 | 6302 |
2.4%
|
| 2003 | 2003 | 2545 |
1%
|
| 2004 | 2004 | 3279 |
1.3%
|
| 2005 | 2005 | 18396 |
7.1%
|
| 2006 | 2006 | 32066 |
12.4%
|
| 2007 | 2007 | 24500 |
9.5%
|
| 2008 | 7076 |
2.7%
|