Year | Value | 2014 | 1,334.1920463665 | 2013 | 1,289.8314310664 | 2012 | 1,227.9833512994 | 2011 | 1,253.5568811442 | 2010 | 1,099.7081996274 | 2009 | 1,040.3550913248 | 2008 | 1,033.5280426756 | 2007 | 957.71431344618 | 2006 | 874.13874835903 | 2005 | 821.32307907549 | 2004 | 784.9741830753 | 2003 | 745.99955161108 | 2002 | 720.95695319575 | 2001 | 686.36174195516 | 2000 | 661.31573806524 | 1999 | 637.88844829578 | 1998 | 626.76653306854 | 1997 | 593.88017986401 | 1996 | 577.70202668262 | 1995 | 537.19867700408 | 1994 | 525.36648690516 | 1993 | 515.05744563998 | 1992 | 469.51375713057 | 1991 | 571.27027287687 | 1990 | 539.37069077306 | 1989 | 547.1619419458 | 1988 | 550.42142615904 | 1987 | 587.76974519335 | 1986 | 563.62597463624 | 1985 | 541.5106694263 | 1984 | 549.06120334263 | 1983 | 513.67973048784 | 1982 | 549.2976848406 | 1981 | 525.25202505595 | 1980 | 499.01654466515 | 1979 | 476.98644454586 | 1978 | 466.62916324087 | 1977 | 472.86181802919 | 1976 | 444.37247094535 | 1975 | 435.77381130858 | 1974 | 426.90610954578 | 1973 | 410.29561932253 | 1972 | 406.57866814456 | 1971 | 388.51440716367 |
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