| Year | Value | | 2014 | 5,062.6064215523 | | 2013 | 5,028.9957940618 | | 2012 | 5,534.8971585452 | | 2011 | 5,389.3331222553 | | 2010 | 5,333.4395555356 | | 2009 | 5,627.8837063093 | | 2008 | 5,805.1925460927 | | 2007 | 5,701.330853594 | | 2006 | 5,434.5764685407 | | 2005 | 5,297.2000254111 | | 2004 | 5,200.0243538627 | | 2003 | 5,091.2924240053 | | 2002 | 4,909.6396980303 | | 2001 | 4,719.1472171393 | | 2000 | 4,586.3298700106 | | 1999 | 4,316.3262897732 | | 1998 | 4,175.7345663345 | | 1997 | 3,989.1161072065 | | 1996 | 3,832.6672196667 | | 1995 | 3,708.9975878971 | | 1994 | 3,598.5237976654 | | 1993 | 3,459.4229770043 | | 1992 | 3,398.3837579181 | | 1991 | 3,253.2206865417 | | 1990 | 3,221.4053204184 | | 1989 | 3,205.1148629991 | | 1988 | 3,097.544351724 | | 1987 | 2,859.129881772 | | 1986 | 2,724.2319392592 | | 1985 | 2,666.3177073372 | | 1984 | 2,561.6925805198 | | 1983 | 2,424.586612248 | | 1982 | 2,270.4908814157 | | 1981 | 2,263.7689054253 | | 1980 | 2,247.4450363261 | | 1979 | 2,180.6071851012 | | 1978 | 2,100.9635354724 | | 1977 | 1,895.0464409921 | | 1976 | 1,802.8656476004 | | 1975 | 1,655.7709736793 | | 1974 | 1,562.2590527004 | | 1973 | 1,547.9747871171 | | 1972 | 1,360.9524439542 | | 1971 | 1,198.2739058022 | | 1970 | 1,023.7914950017 | | 1969 | 917.612738699 | | 1968 | 802.79014479854 | | 1967 | 742.27713952231 | | 1966 | 625.28653645243 | | 1965 | 475.42008013021 | | 1964 | 407.97003300304 | | 1963 | 342.114185474 | | 1962 | 305.38930448533 | | 1961 | 272.56327361709 | | 1960 | 241.72665324408 |
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