| Year | Value | | 2022 | 1,842,219,212 | | 2021 | 1,837,533,057 | | 2020 | 1,829,244,456 | | 2019 | 1,819,297,521 | | 2018 | 1,808,611,119 | | 2017 | 1,796,795,150 | | 2016 | 1,784,001,069 | | 2015 | 1,770,673,519 | | 2014 | 1,756,953,768 | | 2013 | 1,742,491,664 | | 2012 | 1,727,321,806 | | 2011 | 1,711,565,995 | | 2010 | 1,695,095,306 | | 2009 | 1,678,446,524 | | 2008 | 1,662,291,702 | | 2007 | 1,645,982,615 | | 2006 | 1,629,177,254 | | 2005 | 1,611,953,017 | | 2004 | 1,593,868,587 | | 2003 | 1,574,927,914 | | 2002 | 1,555,794,899 | | 2001 | 1,535,887,388 | | 2000 | 1,514,104,957 | | 1999 | 1,491,344,015 | | 1998 | 1,468,703,182 | | 1997 | 1,445,919,145 | | 1996 | 1,423,204,021 | | 1995 | 1,400,361,068 | | 1994 | 1,377,094,693 | | 1993 | 1,353,869,265 | | 1992 | 1,330,697,306 | | 1991 | 1,307,263,395 | | 1990 | 1,283,113,055 | | 1989 | 1,259,764,238 | | 1988 | 1,236,731,927 | | 1987 | 1,213,829,454 | | 1986 | 1,190,921,681 | | 1985 | 1,168,076,507 | | 1984 | 1,145,433,995 | | 1983 | 1,123,050,540 | | 1982 | 1,100,641,133 | | 1981 | 1,077,870,896 | | 1980 | 1,056,480,098 | | 1979 | 1,036,527,542 | | 1978 | 1,017,756,307 | | 1977 | 999,684,628 | | 1976 | 981,897,660 | | 1975 | 964,657,889 | | 1974 | 945,826,721 | | 1973 | 928,856,938 | | 1972 | 912,079,196 | | 1971 | 896,438,526 | | 1970 | 880,710,397 | | 1969 | 864,164,378 | | 1968 | 847,674,239 | | 1967 | 831,527,147 | | 1966 | 815,729,513 | | 1965 | 800,120,208 | | 1964 | 784,481,283 | | 1963 | 768,804,462 | | 1962 | 753,372,112 | | 1961 | 738,293,949 | | 1960 | 723,197,847 |
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