| Year | Value | | 2022 | 1,837,472,494 | | 2021 | 1,832,841,938 | | 2020 | 1,826,688,576 | | 2019 | 1,818,456,315 | | 2018 | 1,809,093,919 | | 2017 | 1,798,918,429 | | 2016 | 1,788,091,491 | | 2015 | 1,776,742,071 | | 2014 | 1,765,099,956 | | 2013 | 1,752,681,243 | | 2012 | 1,739,362,637 | | 2011 | 1,725,012,249 | | 2010 | 1,709,684,086 | | 2009 | 1,694,575,716 | | 2008 | 1,679,999,228 | | 2007 | 1,665,058,181 | | 2006 | 1,649,327,112 | | 2005 | 1,633,229,458 | | 2004 | 1,616,413,038 | | 2003 | 1,598,809,832 | | 2002 | 1,580,916,579 | | 2001 | 1,562,254,952 | | 2000 | 1,541,699,251 | | 1999 | 1,521,337,150 | | 1998 | 1,500,937,782 | | 1997 | 1,480,109,940 | | 1996 | 1,458,420,910 | | 1995 | 1,436,449,376 | | 1994 | 1,416,163,335 | | 1993 | 1,396,057,400 | | 1992 | 1,374,516,911 | | 1991 | 1,352,207,940 | | 1990 | 1,329,106,283 | | 1989 | 1,306,202,531 | | 1988 | 1,284,097,602 | | 1987 | 1,261,823,755 | | 1986 | 1,239,629,696 | | 1985 | 1,217,727,654 | | 1984 | 1,196,045,300 | | 1983 | 1,174,375,216 | | 1982 | 1,152,434,175 | | 1981 | 1,129,968,310 | | 1980 | 1,109,154,215 | | 1979 | 1,089,615,113 | | 1978 | 1,070,582,225 | | 1977 | 1,052,042,766 | | 1976 | 1,033,824,106 | | 1975 | 1,015,882,767 | | 1974 | 996,210,495 | | 1973 | 978,187,558 | | 1972 | 960,268,277 | | 1971 | 943,448,231 | | 1970 | 926,309,139 | | 1969 | 908,287,974 | | 1968 | 890,249,735 | | 1967 | 872,594,309 | | 1966 | 855,500,591 | | 1965 | 838,881,350 | | 1964 | 822,062,197 | | 1963 | 805,041,655 | | 1962 | 788,339,789 | | 1961 | 771,972,430 | | 1960 | 755,686,097 |
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