| Year | Value | | 2022 | 11,846,925 | | 2021 | 11,483,940 | | 2020 | 11,117,730 | | 2019 | 10,747,964 | | 2018 | 10,380,103 | | 2017 | 10,020,410 | | 2016 | 9,692,976 | | 2015 | 9,400,148 | | 2014 | 9,122,598 | | 2013 | 8,855,077 | | 2012 | 8,592,365 | | 2011 | 8,324,119 | | 2010 | 8,053,330 | | 2009 | 7,769,976 | | 2008 | 7,487,767 | | 2007 | 7,250,775 | | 2006 | 7,053,972 | | 2005 | 6,871,427 | | 2004 | 6,715,200 | | 2003 | 6,568,956 | | 2002 | 6,392,895 | | 2001 | 6,208,787 | | 2000 | 6,041,391 | | 1999 | 5,886,120 | | 1998 | 5,744,746 | | 1997 | 5,622,102 | | 1996 | 5,506,675 | | 1995 | 5,389,762 | | 1994 | 5,267,803 | | 1993 | 5,144,698 | | 1992 | 5,021,026 | | 1991 | 4,909,474 | | 1990 | 4,819,752 | | 1989 | 4,727,662 | | 1988 | 4,632,019 | | 1987 | 4,539,934 | | 1986 | 4,442,753 | | 1985 | 4,343,930 | | 1984 | 4,243,400 | | 1983 | 4,146,935 | | 1982 | 4,059,144 | | 1981 | 3,985,583 | | 1980 | 3,918,599 | | 1979 | 3,838,898 | | 1978 | 3,749,796 | | 1977 | 3,661,167 | | 1976 | 3,576,802 | | 1975 | 3,491,802 | | 1974 | 3,405,459 | | 1973 | 3,321,100 | | 1972 | 3,240,610 | | 1971 | 3,163,761 | | 1970 | 3,090,126 | | 1969 | 3,020,467 | | 1968 | 2,954,782 | | 1967 | 2,892,408 | | 1966 | 2,832,473 | | 1965 | 2,773,116 | | 1964 | 2,714,325 | | 1963 | 2,657,044 | | 1962 | 2,601,929 | | 1961 | 2,549,522 | | 1960 | 2,500,934 |
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