438
1975
1400
10.3
1976
2060
10.5
1977
1610
16.1
1978
691
17.5
1979
1340
12.0
1980
1180
9.67
1981
1070
14.0
1982
1300
16.2
1983
1550
15.6
1984
1970
14.2
1985
522
12.9
1986
586
12.0
1987
720
12.5
1988
543
8.99
1989
445
13.0
1990
652
12.4
1991
532
7.29
1992
41.4
11.9
1993
392
6.34
1994
298
14.4
1995
506
9.84
1996
1120
11.3
1997
595
10.4
1998
629
8.23
1999
557
12.8
2000
516
11.8
2001
920
12.7
2002
561
19.3
2003
1010
16.8
2004
711
10.7
2005
414
12.9
2006
274
9.42






