Statistiken
| Jahr |
Anzahl |
| 19501) |
18.200 |
| 19551) |
24.029 |
| 1960 |
33.743 |
| 1965 |
44.614 |
| 1970 |
46.091 |
| 1971 |
44.352 |
| 1972 |
43.693 |
| 1973 |
42.054 |
| 1974 |
37.195 |
| 1975 |
34.804 |
| 1976 |
32.940 |
| 1977 |
31.296 |
| 1978 |
30.196 |
| 1979 |
28.681 |
| 1980 |
27.528 |
| 1981 |
26.237 |
| 1982 |
24.586 |
| 1983 |
22.410 |
| 1984 |
20.642 |
| 1985 |
19.781 |
| 1986 |
21.647 |
| 1987 |
20.817 |
| 1988 |
20.243 |
| 1989 |
19.859 |
| 1990 |
19.317 |
| 1991 |
18.958 |
| 1992 |
18.836 |
| 1993 |
18.464 |
| 1994 |
18.300 |
| 1995 |
17.957 |
| 1996 |
17.660 |
| 1997 |
17.066 |
| 1998 |
16.617 |
| 1999 |
16.404 |
| 2000 |
16.324 |
| 2001 |
16.068 |
| 2002 |
15.971 |
| 2003 |
15.770 |
| 2004 |
15.428 |
| 2005 |
15.187 |
| 2006 |
15.036 |
| 2007 |
14.902 |
| 2008 |
14.527 |
| 2009 |
14.447 |
| 2010 |
14.410 |
|
|