| 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 | 2010 | 2011 | 2012 | 2013 | | |
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| | | | | | | | | | | | | | 31.9 | 29924.1 | | | | | | | | | | | | | 35.5 | 34626.0 | | | | | | | | | | | | | 33.1 | 31189.5 | | 1 | 4.25 | | | | | | 4 | 56.08 | | | | | | | | | | | | | | | | | 31.9 | 30067.0 | | 1 | 5.46 | 100.00 | | | | | 4 | 57.22 | 100.00 | 139 | 32.8 | 28743.5 | | 1 | 6.85 | 91.00 | | | | | 4 | 59.37 | 98.00 | 166 | 30.1 | 27345.5 | | 1 | 7.07 | 90.00 | | | | | 5 | 61.97 | 98.00 | 117 | 27.8 | 23966.7 | | 1 | 7.15 | 98.00 | | | | | 5 | 73.67 | 98.00 | 668 | 23.0 | 18875.0 | | 1 | 7.54 | 98.00 | | | | | 5 | 65.87 | 98.00 | 645 | | | | | | | | | | | | | | | 20.6 | 15904.4 | | 2 | 19.07 | 98.00 | | | | | 5 | 66.17 | 98.00 | 555 | 19.0 | 13517.7 | | 2 | 13.64 | 98.00 | | | | | 6 | 68.75 | 98.00 | 771 | 19.2 | 13269.4 | | 2 | 19.39 | 98.00 | | | | | 6 | 76.33 | 98.00 | 964 | 21.5 | 14492.6 | | 4 | 25.43 | 98.00 | | | | | 7 | 78.67 | 98.00 | 1668 | 20.7 | 12771.2 | | 4 | 29.43 | 98.00 | | | | | 7 | 77.87 | 98.00 | 2885 | | | | | | | | | | | | | | | 21.3 | 12558.3 | | 4 | 27.79 | 98.00 | | | | | 7 | 77.87 | 98.00 | 5115 | 22.1 | 11587.4 | | 6 | 45.02 | 98.00 | | | | | 10 | 94.75 | 98.00 | 9680 | 11.9 | 5369.8 | | 7 | 58.18 | 98.00 | | | | | 12 | 134.75 | 98.00 | 15225 | 10.6 | 2166.5 | 0.51 | 9 | 77.79 | 98.30 | | | 52.71 | | 12 | 134.85 | 98.00 | 26480 | 9.2 | 1598.6 | 0.93 | 12 | 98.36 | 98.30 | | | 82.21 | | 13 | 148.25 | 91.00 | 45398 | | | | | | | | | | | | | | | 11.5 | 1644.1 | 1.07 | 12 | 101.01 | 98.81 | | | 182.97 | | 13 | 150.25 | 96.97 | 93428 | 12.6 | 1742.3 | 1.17 | 12 | 111.00 | 99.12 | | | 202.75 | | 15 | 156.05 | 98.44 | 100546 | 12.3 | 1443.5 | 1.28 | 12 | 110.68 | 99.60 | | | 230.97 | | 16 | 174.67 | 99.98 | 106773 | 11.7 | 964.7 | | 12 | 118.36 | 99.80 | | | 165.78 | 43.24 | 16 | 178.20 | 99.96 | 115072 | 12.2 | 873.2 | | 12 | 122.45 | 99.80 | | | 175.71 | 45.80 | 16 | 188.90 | 97.7 | 149661 | | | | | | | | | | | | | | | 12.6 | 804.7 | 0.92 | 16 | 200.15 | 99.91 | | | 205.95 | 51.76 | 16 | 192.43 | 99.91 | 136451 | 12.3 | 827.4 | 1.09 | 18 | 329.40 | 99.82 | | | 231.24 | 57.05 | 16 | 197.43 | 99.88 | 154317 | 11.8 | 683.0 | 1.35 | 19 | 259.32 | 99.90 | | | 243.00 | 58.39 | 16 | 197.86 | 99.91 | 157210 | 18.1 | 814.4 | 1.86 | 24 | 244.17 | 99.50 | | 97.57 | 265.50 | 62.09 | 16 | 229.55 | 100.00 | 212091 | 22.6 | 873.8 | 2.29 | 25 | 329.81 | 99.99 | | 99.99 | 282.00 | 64.12 | 17 | 281.88 | 100.00 | 236334 | | | | | | | | | | | | | | | 28.0 | 1221.0 | 3.02 | 25 | 294.23 | 99.99 | 99.97 | 94.90 | 319.58 | 70.75 | 17 | 282.88 | 100.00 | 240146 | 38.0 | 1711.0 | 3.70 | 25 | 309.12 | 99.99 | 99.97 | 93.13 | 345.06 | 74.43 | 17 | 288.92 | 99.98 | 317437 | 46.8 | 1767.3 | 5.37 | 24 | 309.06 | 99.99 | 99.97 | 93.19 | 383.13 | 81.00 | 17 | 297.40 | 99.98 | 385231 | 62.4 | 2451.5 | 8.19 | 26 | 319.13 | 99.99 | 99.97 | 94.38 | 413.50 | 85.90 | 18 | 316.58 | 99.99 | 453932 | 74.3 | 2923.3 | 11.81 | 26 | 319.24 | 99.99 | 99.97 | 98.72 | 448.12 | 91.68 | 18 | 324.82 | 99.99 | 613672 | 97.4 | 3235.9 | 13.52 | 25 | 334.22 | 100.00 | 100.00 | 99.74 | 475.92 | 95.90 | 18 | 329.56 | 100.00 | 796113 | 120.0 | 3954.6 | 16.23 | 26 | 343.68 | 100.00 | 100.00 | 99.75 | 495.70 | 99.13 | 25 | 471.69 | 100.00 | 1081857 | 137.8 | 4288.5 | 18.60 | 26 | 347.89 | 100.00 | 100.00 | 99.75 | 524.59 | 103.00 | 25 | 473.62 | 100.00 | 1689443 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |