| Year | Value | | 2022 | 1,388,981,335 | | 2021 | 1,384,251,980 | | 2020 | 1,378,363,286 | | 2019 | 1,371,034,688 | | 2018 | 1,362,225,619 | | 2017 | 1,352,558,105 | | 2016 | 1,342,195,187 | | 2015 | 1,331,982,914 | | 2014 | 1,321,488,624 | | 2013 | 1,310,571,190 | | 2012 | 1,299,288,866 | | 2011 | 1,288,238,023 | | 2010 | 1,278,312,287 | | 2009 | 1,268,984,267 | | 2008 | 1,259,415,411 | | 2007 | 1,250,100,183 | | 2006 | 1,241,480,353 | | 2005 | 1,232,318,961 | | 2004 | 1,222,691,690 | | 2003 | 1,213,074,533 | | 2002 | 1,203,273,770 | | 2001 | 1,193,163,701 | | 2000 | 1,182,688,580 | | 1999 | 1,171,829,266 | | 1998 | 1,160,405,678 | | 1997 | 1,148,207,335 | | 1996 | 1,135,416,093 | | 1995 | 1,122,343,224 | | 1994 | 1,109,126,215 | | 1993 | 1,095,468,363 | | 1992 | 1,081,760,968 | | 1991 | 1,067,764,597 | | 1990 | 1,052,866,743 | | 1989 | 1,036,537,095 | | 1988 | 1,020,586,612 | | 1987 | 1,004,003,548 | | 1986 | 987,501,123 | | 1985 | 971,538,181 | | 1984 | 956,130,368 | | 1983 | 941,038,768 | | 1982 | 925,597,839 | | 1981 | 910,334,428 | | 1980 | 896,216,786 | | 1979 | 882,303,119 | | 1978 | 868,143,625 | | 1977 | 854,134,991 | | 1976 | 840,205,490 | | 1975 | 825,705,978 | | 1974 | 810,573,165 | | 1973 | 794,340,379 | | 1972 | 777,475,327 | | 1971 | 760,228,905 | | 1970 | 742,011,078 | | 1969 | 724,037,651 | | 1968 | 706,556,753 | | 1967 | 689,906,264 | | 1966 | 673,764,690 | | 1965 | 657,255,238 | | 1964 | 642,063,433 | | 1963 | 627,269,889 | | 1962 | 612,358,024 | | 1961 | 603,022,843 | | 1960 | 599,818,916 |
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