| Year | Value | | 2022 | 798,746,570 | | 2021 | 815,740,136 | | 2020 | 832,161,390 | | 2019 | 848,186,543 | | 2018 | 863,702,152 | | 2017 | 878,771,393 | | 2016 | 893,241,396 | | 2015 | 907,771,288 | | 2014 | 921,976,280 | | 2013 | 935,557,811 | | 2012 | 948,645,560 | | 2011 | 961,511,330 | | 2010 | 975,578,644 | | 2009 | 991,064,562 | | 2008 | 1,005,988,045 | | 2007 | 1,020,650,042 | | 2006 | 1,035,030,724 | | 2005 | 1,049,153,168 | | 2004 | 1,063,273,132 | | 2003 | 1,076,935,768 | | 2002 | 1,089,939,080 | | 2001 | 1,102,160,054 | | 2000 | 1,112,225,526 | | 1999 | 1,119,080,865 | | 1998 | 1,124,315,863 | | 1997 | 1,128,245,944 | | 1996 | 1,131,172,416 | | 1995 | 1,133,338,990 | | 1994 | 1,134,721,010 | | 1993 | 1,135,235,624 | | 1992 | 1,135,007,017 | | 1991 | 1,133,734,469 | | 1990 | 1,130,730,639 | | 1989 | 1,125,179,059 | | 1988 | 1,119,029,301 | | 1987 | 1,112,158,951 | | 1986 | 1,104,995,521 | | 1985 | 1,098,517,069 | | 1984 | 1,092,829,322 | | 1983 | 1,087,334,517 | | 1982 | 1,080,595,486 | | 1981 | 1,075,002,741 | | 1980 | 1,070,617,567 | | 1979 | 1,066,416,072 | | 1978 | 1,061,674,681 | | 1977 | 1,053,715,626 | | 1976 | 1,042,372,440 | | 1975 | 1,029,709,253 | | 1974 | 1,016,253,486 | | 1973 | 1,000,848,921 | | 1972 | 983,167,757 | | 1971 | 963,684,922 | | 1970 | 942,703,280 | | 1969 | 922,272,343 | | 1968 | 902,385,542 | | 1967 | 883,572,779 | | 1966 | 865,184,235 | | 1965 | 845,677,680 | | 1964 | 828,332,732 | | 1963 | 816,800,269 | | 1962 | 804,507,816 | | 1961 | 801,275,029 | | 1960 | 808,073,848 |
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