265
1977
1050
27.3
1978
1050
27.3
1979
678
28.9
1980
1280
40.9
1981
1180
36.8
1982
1310
27.3
1983
959
33.3
1984
891
33.3
1985
959
24.0
1986
1030
26.5
1987
741
21.8
1988
1200
26.5
1989
840
34.7
1990
913
26.5
1991
737
29.0
1992
913
35.6
1993
721
37.2
1994
869
28.3
1995
895
24.0
1996
891
30.7
1997
882
28.2
1998
1180
34.8
1999
997
29.0
2000
1210
21.8
2001
904
27.3
2002
762
38.9
2003
1150
40.1
2004
782
40.0
2005
1140
39.1
2006
1050
30.8












