Year | Value | 2022 | 31,237,363 | 2021 | 30,768,737 | 2020 | 30,253,405 | 2019 | 29,612,417 | 2018 | 28,923,652 | 2017 | 28,244,347 | 2016 | 27,578,494 | 2015 | 26,933,524 | 2014 | 26,318,017 | 2013 | 25,702,501 | 2012 | 25,052,103 | 2011 | 24,364,998 | 2010 | 23,643,524 | 2009 | 22,889,068 | 2008 | 21,920,960 | 2007 | 20,744,335 | 2006 | 19,581,213 | 2005 | 18,464,958 | 2004 | 17,398,014 | 2003 | 16,601,823 | 2002 | 16,100,294 | 2001 | 15,674,943 | 2000 | 15,304,864 | 1999 | 14,997,376 | 1998 | 14,750,668 | 1997 | 14,545,319 | 1996 | 14,346,043 | 1995 | 14,127,560 | 1994 | 13,886,489 | 1993 | 13,621,027 | 1992 | 13,338,781 | 1991 | 13,068,197 | 1990 | 12,823,890 | 1989 | 12,593,130 | 1988 | 12,368,043 | 1987 | 12,147,626 | 1986 | 11,922,470 | 1985 | 11,687,348 | 1984 | 11,445,326 | 1983 | 11,197,385 | 1982 | 10,947,736 | 1981 | 10,707,304 | 1980 | 10,479,785 | 1979 | 10,262,313 | 1978 | 10,054,711 | 1977 | 9,853,752 | 1976 | 9,651,738 | 1975 | 9,444,222 | 1974 | 9,233,207 | 1973 | 9,020,697 | 1972 | 8,813,056 | 1971 | 8,625,743 | 1970 | 8,463,876 | 1969 | 8,322,857 | 1968 | 8,204,024 | 1967 | 8,099,595 | 1966 | 7,979,128 | 1965 | 7,821,461 | 1964 | 7,626,638 | 1963 | 7,392,854 | 1962 | 7,139,534 | 1961 | 6,910,748 | 1960 | 6,731,882 |
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