| 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 | | |
|
| | | | | | | | 290 | 23 | 7.6 | | | 107.2 | | 88.9 | 309 | 23 | 10.2 | | | 128.0 | | 89.4 | 334 | 23 | 9.4 | | | 147.0 | | 95.1 | | | | | | | | | 347 | 25 | 10.8 | | | 174.0 | | 97.6 | 365 | 25 | 10.9 | | | 204.7 | | 99.3 | 411 | 25 | 10.2 | | | 221.4 | | 99.5 | 568 | 25 | 10.0 | | | 235.4 | | 98.8 | 706 | 25 | 10.0 | | | 248.1 | | 142.2 | | | | | | | | | 747 | 26 | 8.9 | | | 274.4 | | 167.5 | 805 | 26 | 7.7 | | | 298.3 | | 181.0 | 770 | 26 | 7.4 | | | 319.9 | | 190.0 | 860 | 26 | 6.6 | | | 337.0 | | 196.0 | 904 | 30 | 7.3 | | | 384.1 | | 210.0 | | | | | | | | | 968 | 30 | 6.6 | | | 397.1 | | 210.3 | 1036 | 5 | 1.2 | | | 430.9 | | 216.0 | 1064 | 5 | 3.1 | | | 446.3 | | 220.6 | 1122 | 25 | 9.6 | | | 467.2 | | 238.1 | 1065 | 59 | 19.4 | | | 483.9 | | 258.4 | | | | | | | | | 1597 | 59 | 21.2 | | | 483.0 | | 268.0 | 1635 | 59 | 22.0 | | | 490.0 | | 279.0 | 1712 | 59 | 22.5 | | | 495.1 | | 295.6 | 1754 | 59 | 25.0 | | | 505.0 | | 298.0 | 1852 | 129 | 39.4 | 6550 | | 583.9 | | 274.0 | | | | | | | | | 2163 | 144 | 42.0 | 6750 | | 309.3 | | 301.0 | 2658 | 181 | 45.0 | 8750 | | 321.4 | | 311.7 | 2903 | 215 | 50.1 | 9400 | | 425.1 | | 294.7 | 2909 | 255 | 53.9 | 9850 | 496.0 | 491.0 | 79.3 | 206.0 | 2521 | 324 | 62.4 | 10350 | 537.0 | 454.6 | 81.2 | 172.0 | | | | | | | | | 3398 | 331 | 73.8 | 10350 | 585.1 | 538.2 | 92.5 | 175.7 | 4357 | 353 | 76.2 | 10350 | 619.5 | 600.9 | 95.7 | 189.1 | 4458 | 329 | 78.9 | 12148 | 672.8 | 656.6 | 97.7 | 206.8 | 4495 | 356 | 80.3 | 13680 | 669.1 | 656.1 | 98.2 | 211.2 | | | | | | | | | | | | | | | | | |