Year | Value | 2022 | 44,122,299 | 2021 | 43,964,715 | 2020 | 43,828,601 | 2019 | 43,654,486 | 2018 | 43,662,743 | 2017 | 43,744,952 | 2016 | 43,972,662 | 2015 | 44,181,439 | 2014 | 44,244,964 | 2013 | 44,219,633 | 2012 | 44,121,449 | 2011 | 43,778,649 | 2010 | 43,475,081 | 2009 | 43,381,679 | 2008 | 43,371,999 | 2007 | 43,263,717 | 2006 | 43,235,593 | 2005 | 43,197,907 | 2004 | 42,910,752 | 2003 | 42,494,397 | 2002 | 42,091,562 | 2001 | 41,677,770 | 2000 | 41,215,441 | 1999 | 40,711,879 | 1998 | 40,146,741 | 1997 | 39,561,067 | 1996 | 39,174,619 | 1995 | 38,696,592 | 1994 | 38,137,027 | 1993 | 37,894,837 | 1992 | 37,784,656 | 1991 | 37,197,561 | 1990 | 35,967,760 | 1989 | 34,603,700 | 1988 | 33,248,284 | 1987 | 31,848,886 | 1986 | 30,619,198 | 1985 | 30,183,063 | 1984 | 30,107,232 | 1983 | 29,748,242 | 1982 | 29,369,215 | 1981 | 29,159,026 | 1980 | 28,889,259 | 1979 | 28,525,048 | 1978 | 28,291,367 | 1977 | 28,163,188 | 1976 | 28,050,337 | 1975 | 28,081,204 | 1974 | 28,306,140 | 1973 | 28,411,978 | 1972 | 28,329,546 | 1971 | 28,127,660 | 1970 | 27,643,850 | 1969 | 26,982,110 | 1968 | 26,480,888 | 1967 | 26,101,271 | 1966 | 25,586,565 | 1965 | 25,213,085 | 1964 | 24,780,994 | 1963 | 23,700,870 | 1962 | 22,335,835 | 1961 | 21,266,150 | 1960 | 20,420,624 |
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