600.1
1985
1420
69.3
1986
1270
69.3
1987
1520
67.5
1988
1370
52.9
1989
1270
63.0
1990
1170
61.0
1991
1470
55.4
1992
1270
59.4
1993
1470
53.0
1994
957
51.8
1995
1450
51.3
1996
1470
53.0
1997
1320
47.0
1998
1460
45.2
1999
1840
77.0
2000
1800
71.6
2001
1130
57.5
2002
1620
27.2
2003
1350
30.0
2004
1010
56.6
2005
1620
59.4
2006
949
58.0




































