Year | Value | 2014 | 15,588.487146432 | 2013 | 15,750.811633479 | 2012 | 15,336.624856521 | 2011 | 15,644.54027755 | 2010 | 15,269.745476893 | 2009 | 15,450.730688594 | 2008 | 16,377.479696135 | 2007 | 16,683.133659329 | 2006 | 16,508.339552022 | 2005 | 16,948.27522094 | 2004 | 17,264.736743814 | 2003 | 17,208.523516665 | 2002 | 16,960.639671858 | 2001 | 16,840.193750652 | 2000 | 17,037.072280829 | 1999 | 16,678.932595154 | 1998 | 16,435.786987526 | 1997 | 16,653.677054478 | 1996 | 16,607.206336677 | 1995 | 16,532.382036352 | 1994 | 16,388.280502415 | 1993 | 16,320.127298241 | 1992 | 16,164.419040336 | 1991 | 16,181.58874818 | 1990 | 16,167.374558604 | 1989 | 16,464.039506715 | 1988 | 16,389.338104753 | 1987 | 15,798.287273287 | 1986 | 15,363.399577583 | 1985 | 14,857.258592911 | 1984 | 14,343.392033437 | 1983 | 13,457.065791348 | 1982 | 12,981.078667937 | 1981 | 13,239.408757041 | 1980 | 12,803.975514923 | 1979 | 12,422.761126315 | 1978 | 12,269.01929596 | 1977 | 11,797.262588309 | 1976 | 11,075.954225297 | 1975 | 10,466.582624974 | 1974 | 10,804.60079545 | 1973 | 10,241.920858454 | 1972 | 9,803.5584189599 | 1971 | 9,166.6836657009 | 1970 | 8,962.2022134684 | 1969 | 8,532.9085029485 | 1968 | 8,030.4184342461 | 1967 | 7,630.1685283167 | 1966 | 7,359.088188348 | 1965 | 6,909.8993800183 | 1964 | 6,468.9262613195 | 1963 | 5,966.0409196372 | 1962 | 5,791.1249597078 | 1961 | 5,605.111926003 | 1960 | 5,630.5207177745 |
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