| 1978 | 1979 | 1980 | | 1981 | 1982 | 1983 | 1984 | 1985 | | 1986 | 1987 | 1988 | 1989 | 1990 | | 1991 | 1992 | 1993 | 1994 | 1995 | | 1996 | 1997 | 1998 | 1999 | 2000 | | 2001 | 2002 | 2003 | 2004 | 2005 | | 2006 | 2007 | 2008 | 2009 | | |
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| | | | | | | | | 22.5 | 16.9 | | | | | | | 26.5 | 19.2 | | | | | | | 33.2 | 18.5 | | | | | | | | | | | | | | | 31.4 | 15.4 | | | | | | | 34.5 | 14.1 | | | | | | | 38.5 | 16.0 | | | | | | | 52.2 | 22.5 | | | | | | | 77.8 | 30.4 | | | | | | | | | | | | | | | 94.5 | 33.0 | | | | | | | 126.2 | 43.1 | | | | | | | 149.4 | 37.4 | | | | | | | 123.1 | 35.0 | 12.8 | | 18.2 | 44.5 | 12.6 | | 136.2 | 34.4 | 22.8 | | 15.2 | 52.3 | 11.5 | | | | | | | | | | 151.1 | 35.5 | 28.2 | | 13.9 | 65.5 | 8.0 | | 216.7 | 42.2 | 40.1 | | 14.9 | 109.9 | 9.6 | 54.3 | 425.2 | 47.1 | 79.2 | 1.6 | 28.0 | 205.2 | 64.1 | 71.1 | 695.7 | 64.1 | 91.5 | 0.8 | 96.9 | 331.2 | 111.2 | 200.8 | 915.8 | 70.3 | 122.7 | 1.1 | 187.3 | 339.8 | 194.6 | | | | | | | | | 204.9 | 926.1 | 76.7 | 152.8 | 1.0 | 161.2 | 330.5 | 203.9 | 183.1 | 1016.7 | 86.3 | 194.3 | | 139.2 | 383.4 | 213.5 | 207.1 | 1140.1 | 98.4 | 223.8 | 17.0 | 132.1 | 450.2 | 218.6 | 212.1 | 1183.8 | 136.2 | 262.2 | 1.4 | 82.7 | 461.3 | 240.0 | 293.1 | 1439.1 | 107.0 | 373.8 | 0.6 | 51.5 | 505.6 | 400.6 | | | | | | | | | 325.5 | 1796.8 | 136.7 | 429.4 | 2.5 | 35.6 | 595.6 | 597.0 | 433.2 | 2075.3 | 108.5 | 543.8 | 1.9 | 41.5 | 672.8 | 706.8 | 542.7 | 2674.0 | 78.4 | 755.2 | | 52.6 | 887.9 | 899.9 | 654.6 | 3712.8 | 118.6 | 804.7 | | 120.5 | 1245.7 | 1423.3 | 924.4 | 4553.7 | 128.8 | 1055.8 | | 70.9 | 1452.8 | 1845.4 | | | | | | | | | 1043.8 | 4927.3 | 126.4 | 1347.5 | 32.7 | 76.2 | 1532.2 | 1812.3 | 1202.2 | 6193.0 | 102.2 | 1513.3 | 22.4 | 82.8 | 2195.6 | 2276.7 | 1469.5 | 5184.7 | 104.2 | 1394.2 | 35.5 | 80.0 | 2016.4 | 1554.5 | 1321.7 | 8702.2 | 118.1 | 3038.5 | 17.5 | 39.3 | 2441.3 | 3047.4 | | | | | | | | | | | | | | | | | |