| 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 | | |
|
| | | | 1907.7 | 1866.3 | 13.71 | | | | | | 1902.6 | 1847.7 | 13.67 | -0.23 | 1920.4 | 1864.1 | 12.40 | 6.02 | 1984.7 | 1923.2 | 10.84 | 11.22 | 2144.1 | 2063.4 | 9.90 | 7.98 | 2211.4 | 2141.6 | 8.60 | 5.12 | | | | | 2400.0 | 2326.8 | 8.42 | -0.49 | 2475.8 | 2389.0 | 7.58 | 5.88 | 2612.6 | 2512.3 | 6.37 | 6.45 | 2653.2 | 2561.9 | 5.82 | 2.73 | 2709.7 | 2599.5 | 5.41 | 2.92 | | | | | 2872.0 | 2757.0 | 4.80 | 3.56 | 2987.5 | 2857.8 | 4.21 | 6.54 | 3264.6 | 3033.3 | 3.68 | 2.69 | 3385.9 | 3134.9 | 2.96 | 8.78 | 3533.3 | 3367.9 | 2.34 | 6.83 | | | | | 3734.5 | 3578.4 | 2.09 | 2.75 | 3719.2 | 3568.3 | 1.79 | 9.55 | 3808.1 | 3654.9 | 1.60 | 6.49 | 3906.6 | 3749.0 | 1.46 | 7.49 | 4144.0 | 3946.3 | 1.31 | 5.12 | | | | | 4229.2 | 4036.6 | 1.14 | 8.62 | 4436.1 | 4234.1 | 1.03 | 5.93 | 4648.2 | 4475.9 | 0.93 | 5.73 | 5139.6 | 4928.0 | 0.85 | 3.09 | 5521.9 | 5323.1 | 0.79 | 4.17 | | | | | 5904.1 | 5682.2 | 0.73 | 5.37 | 6285.0 | 6077.5 | 0.64 | 7.02 | 6327.1 | 6118.4 | 0.57 | 7.74 | 6570.3 | 6327.4 | 0.54 | 5.76 | | | | | | | | | |