Year | Value | 2014 | 1,084.9177046287 | 2013 | 1,044.3077116138 | 2012 | 1,068.5491103214 | 2011 | 1,239.909124311 | 2010 | 1,250.2304403679 | 2009 | 1,255.1420602622 | 2008 | 1,190.5407334218 | 2007 | 1,974.6625692603 | 2006 | 2,428.9315378152 | 2005 | 2,453.6182837896 | 2004 | 2,434.662750786 | 2003 | 2,461.6874894145 | 2002 | 2,394.0166262105 | 2001 | 2,320.4038995888 | 2000 | 2,313.3712706315 | 1999 | 2,295.6001126231 | 1998 | 2,265.8056243055 | 1997 | 2,183.6009571992 | 1996 | 2,126.0265925064 | 1995 | 2,071.0360998688 | 1994 | 1,713.6425592006 | 1993 | 1,541.6447409622 | 1992 | 1,462.2681421883 | 1991 | 721.43281532522 | 1990 | 877.9154107599 | 1989 | 586.93037101331 | 1988 | 622.98152076287 | 1987 | 653.61295583297 | 1986 | 618.34186791924 | 1985 | 591.61529299355 | 1984 | 604.65660672366 | 1983 | 754.21604079574 | 1982 | 781.04896967911 | 1981 | 654.92599890061 | 1980 | 669.61798060075 | 1979 | 693.42367617067 | 1978 | 765.6868470573 | 1977 | 765.96394908432 | 1976 | 745.50896138234 | 1975 | 704.41027730101 | 1974 | 1,058.2921493964 | 1973 | 1,012.1728044743 | 1972 | 976.87097419254 | 1971 | 822.8432308685 |
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