Year | Value | 2022 | 52,340,504 | 2021 | 51,211,287 | 2020 | 49,895,271 | 2019 | 48,593,590 | 2018 | 47,322,110 | 2017 | 46,104,466 | 2016 | 44,972,025 | 2015 | 43,943,258 | 2014 | 42,983,125 | 2013 | 42,078,898 | 2012 | 41,205,800 | 2011 | 40,329,471 | 2010 | 39,463,440 | 2009 | 38,627,313 | 2008 | 37,831,326 | 2007 | 37,092,023 | 2006 | 36,403,285 | 2005 | 35,693,267 | 2004 | 34,969,273 | 2003 | 34,236,218 | 2002 | 33,434,912 | 2001 | 32,600,422 | 2000 | 31,814,750 | 1999 | 31,022,951 | 1998 | 30,206,806 | 1997 | 29,431,084 | 1996 | 28,711,001 | 1995 | 27,978,041 | 1994 | 27,126,446 | 1993 | 26,252,451 | 1992 | 25,457,159 | 1991 | 24,740,708 | 1990 | 24,112,730 | 1989 | 23,392,543 | 1988 | 22,782,502 | 1987 | 22,202,937 | 1986 | 21,636,008 | 1985 | 21,098,965 | 1984 | 20,582,936 | 1983 | 20,107,936 | 1982 | 19,678,240 | 1981 | 19,280,740 | 1980 | 18,917,212 | 1979 | 18,509,978 | 1978 | 18,034,807 | 1977 | 17,541,364 | 1976 | 17,051,633 | 1975 | 16,587,461 | 1974 | 16,162,268 | 1973 | 15,767,967 | 1972 | 15,401,913 | 1971 | 15,049,438 | 1970 | 14,691,643 | 1969 | 14,329,850 | 1968 | 13,957,921 | 1967 | 13,578,690 | 1966 | 13,219,637 | 1965 | 12,832,764 | 1964 | 12,431,407 | 1963 | 12,071,253 | 1962 | 11,762,671 | 1961 | 11,533,404 | 1960 | 11,422,204 |
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