| Year | Value | | 2022 | 3,905,434 | | 2021 | 4,117,412 | | 2020 | 4,436,540 | | 2019 | 4,826,491 | | 2018 | 5,229,564 | | 2017 | 5,620,216 | | 2016 | 5,927,187 | | 2015 | 6,107,158 | | 2014 | 6,184,485 | | 2013 | 6,225,630 | | 2012 | 6,190,390 | | 2011 | 6,065,230 | | 2010 | 5,960,135 | | 2009 | 5,869,272 | | 2008 | 5,734,194 | | 2007 | 5,607,808 | | 2006 | 5,538,192 | | 2005 | 5,478,093 | | 2004 | 5,419,724 | | 2003 | 5,357,441 | | 2002 | 5,297,558 | | 2001 | 5,237,187 | | 2000 | 5,146,289 | | 1999 | 5,035,432 | | 1998 | 4,915,874 | | 1997 | 4,790,886 | | 1996 | 4,699,415 | | 1995 | 4,684,213 | | 1994 | 4,747,556 | | 1993 | 4,922,619 | | 1992 | 5,185,096 | | 1991 | 5,487,599 | | 1990 | 5,808,074 | | 1989 | 6,124,896 | | 1988 | 6,337,676 | | 1987 | 6,452,742 | | 1986 | 6,475,165 | | 1985 | 6,435,869 | | 1984 | 6,401,523 | | 1983 | 6,330,037 | | 1982 | 6,226,320 | | 1981 | 6,146,001 | | 1980 | 6,039,995 | | 1979 | 5,911,937 | | 1978 | 5,771,760 | | 1977 | 5,608,974 | | 1976 | 5,420,349 | | 1975 | 5,029,102 | | 1974 | 4,391,507 | | 1973 | 3,720,681 | | 1972 | 3,199,414 | | 1971 | 3,032,944 | | 1970 | 3,334,667 | | 1969 | 4,018,037 | | 1968 | 4,894,158 | | 1967 | 5,688,085 | | 1966 | 6,073,664 | | 1965 | 6,066,912 | | 1964 | 5,792,301 | | 1963 | 5,350,150 | | 1962 | 5,005,838 | | 1961 | 4,840,138 | | 1960 | 4,912,893 |
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