Year | Value | 2022 | 24,603,675 | 2021 | 24,055,857 | 2020 | 23,333,331 | 2019 | 22,615,780 | 2018 | 21,948,886 | 2017 | 21,333,198 | 2016 | 20,741,976 | 2015 | 20,168,617 | 2014 | 19,609,224 | 2013 | 19,050,533 | 2012 | 18,487,206 | 2011 | 17,931,997 | 2010 | 17,400,693 | 2009 | 16,903,097 | 2008 | 16,457,478 | 2007 | 16,065,629 | 2006 | 15,696,162 | 2005 | 15,335,889 | 2004 | 14,992,345 | 2003 | 14,637,791 | 2002 | 14,256,914 | 2001 | 13,893,717 | 2000 | 13,563,967 | 1999 | 13,247,804 | 1998 | 12,946,590 | 1997 | 12,669,532 | 1996 | 12,412,886 | 1995 | 12,142,426 | 1994 | 11,802,483 | 1993 | 11,423,305 | 1992 | 11,059,324 | 1991 | 10,724,309 | 1990 | 10,394,833 | 1989 | 10,032,104 | 1988 | 9,741,090 | 1987 | 9,492,023 | 1986 | 9,306,500 | 1985 | 9,221,168 | 1984 | 9,198,068 | 1983 | 9,217,657 | 1982 | 9,271,787 | 1981 | 9,256,007 | 1980 | 9,148,853 | 1979 | 8,946,205 | 1978 | 8,632,046 | 1977 | 8,297,122 | 1976 | 8,021,103 | 1975 | 7,856,993 | 1974 | 7,802,365 | 1973 | 7,800,956 | 1972 | 7,790,630 | 1971 | 7,724,362 | 1970 | 7,584,276 | 1969 | 7,388,489 | 1968 | 7,159,091 | 1967 | 6,899,715 | 1966 | 6,646,889 | 1965 | 6,416,401 | 1964 | 6,202,003 | 1963 | 6,017,920 | 1962 | 5,843,734 | 1961 | 5,675,219 | 1960 | 5,542,052 |
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