Year | Value | 2019 | 7,891.2588153149 | 2018 | 7,586.049673846 | 2017 | 7,366.4162540597 | 2016 | 6,957.9003840116 | 2015 | 6,645.2668273387 | 2014 | 6,107.3384536268 | 2013 | 5,830.573378457 | 2012 | 5,495.469328845 | 2011 | 5,164.6668817409 | 2010 | 4,438.6562144369 | 2009 | 4,318.1251618918 | 2008 | 4,228.496915941 | 2007 | 4,022.4140685455 | 2006 | 3,740.4099527309 | 2005 | 3,263.984854305 | 2004 | 2,915.3009616095 | 2003 | 2,759.4326464235 | 2002 | 2,581.8848380569 | 2001 | 2,439.7958616635 | 2000 | 2,338.7719189623 | 1999 | 2,198.3656413763 | 1998 | 2,009.0232286226 | 1997 | 1,974.670203421 | 1996 | 1,954.162518686 | 1995 | 2,398.6094588141 | 1994 | 2,281.1278418661 | 1993 | 1,812.2191033685 | 1992 | 1,792.2429817527 | 1991 | 1,977.1282170785 | 1990 | 2,343.838796844 | 1989 | 2,233.3832771859 | 1988 | 2,287.0970704828 | 1987 | 2,118.2507309585 | 1986 | 2,055.3747722838 | 1985 | 1,959.9105947118 | 1984 | 2,092.0444660759 | 1983 | 1,947.3985024151 | 1982 | 1,849.9577411636 | 1981 | 1,792.7314760897 | 1980 | 1,781.9364678991 | 1979 | 1,772.7061336525 | 1978 | 1,627.5157064332 | 1977 | 1,303.2117951751 | 1976 | 1,275.5226790803 | 1975 | 1,216.8738922882 |
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