| Year | Value | | 2022 | 6,754,029,970 | | 2021 | 6,695,487,825 | | 2020 | 6,627,317,499 | | 2019 | 6,553,978,299 | | 2018 | 6,477,695,468 | | 2017 | 6,399,653,365 | | 2016 | 6,319,805,369 | | 2015 | 6,240,231,201 | | 2014 | 6,160,290,229 | | 2013 | 6,079,501,853 | | 2012 | 5,998,432,110 | | 2011 | 5,917,716,358 | | 2010 | 5,838,720,255 | | 2009 | 5,761,985,631 | | 2008 | 5,686,534,868 | | 2007 | 5,612,590,218 | | 2006 | 5,539,726,956 | | 2005 | 5,465,994,258 | | 2004 | 5,391,795,246 | | 2003 | 5,317,576,423 | | 2002 | 5,243,283,354 | | 2001 | 5,168,706,338 | | 2000 | 5,093,905,754 | | 1999 | 5,019,066,614 | | 1998 | 4,943,424,234 | | 1997 | 4,866,752,668 | | 1996 | 4,789,545,395 | | 1995 | 4,712,144,657 | | 1994 | 4,634,770,438 | | 1993 | 4,556,953,494 | | 1992 | 4,478,741,276 | | 1991 | 4,400,104,121 | | 1990 | 4,319,686,835 | | 1989 | 4,238,116,885 | | 1988 | 4,156,275,472 | | 1987 | 4,073,992,562 | | 1986 | 3,992,266,322 | | 1985 | 3,912,715,182 | | 1984 | 3,835,415,425 | | 1983 | 3,759,700,941 | | 1982 | 3,683,951,411 | | 1981 | 3,609,060,683 | | 1980 | 3,537,803,261 | | 1979 | 3,468,586,480 | | 1978 | 3,400,306,889 | | 1977 | 3,333,671,715 | | 1976 | 3,268,150,880 | | 1975 | 3,202,366,239 | | 1974 | 3,136,139,717 | | 1973 | 3,068,507,571 | | 1972 | 3,000,609,403 | | 1971 | 2,933,804,351 | | 1970 | 2,866,379,293 | | 1969 | 2,799,372,212 | | 1968 | 2,733,532,608 | | 1967 | 2,670,092,279 | | 1966 | 2,608,583,276 | | 1965 | 2,547,220,471 | | 1964 | 2,488,809,469 | | 1963 | 2,431,314,278 | | 1962 | 2,374,276,327 | | 1961 | 2,329,503,799 | | 1960 | 2,297,972,283 |
|