| Year | Value | | 2022 | 3,795,159 | | 2021 | 3,840,105 | | 2020 | 3,884,682 | | 2019 | 3,928,018 | | 2018 | 3,978,758 | | 2017 | 4,034,007 | | 2016 | 4,098,613 | | 2015 | 4,150,365 | | 2014 | 4,170,082 | | 2013 | 4,149,439 | | 2012 | 4,087,009 | | 2011 | 3,999,405 | | 2010 | 3,908,549 | | 2009 | 3,834,875 | | 2008 | 3,795,252 | | 2007 | 3,794,679 | | 2006 | 3,759,186 | | 2005 | 3,682,018 | | 2004 | 3,611,086 | | 2003 | 3,543,684 | | 2002 | 3,480,595 | | 2001 | 3,496,765 | | 2000 | 3,582,972 | | 1999 | 3,679,649 | | 1998 | 3,783,758 | | 1997 | 3,914,844 | | 1996 | 4,058,656 | | 1995 | 4,195,326 | | 1994 | 4,308,437 | | 1993 | 4,375,005 | | 1992 | 4,402,115 | | 1991 | 4,405,965 | | 1990 | 4,383,652 | | 1989 | 4,345,300 | | 1988 | 4,298,950 | | 1987 | 4,226,470 | | 1986 | 4,116,222 | | 1985 | 3,923,609 | | 1984 | 3,691,702 | | 1983 | 3,484,936 | | 1982 | 3,299,268 | | 1981 | 3,167,581 | | 1980 | 3,143,656 | | 1979 | 3,187,286 | | 1978 | 3,234,312 | | 1977 | 3,291,181 | | 1976 | 3,343,097 | | 1975 | 3,376,837 | | 1974 | 3,396,922 | | 1973 | 3,419,877 | | 1972 | 3,455,211 | | 1971 | 3,496,297 | | 1970 | 3,546,853 | | 1969 | 3,591,763 | | 1968 | 3,611,636 | | 1967 | 3,595,289 | | 1966 | 3,542,582 | | 1965 | 3,482,871 | | 1964 | 3,413,585 | | 1963 | 3,337,970 | | 1962 | 3,266,492 | | 1961 | 3,185,807 | | 1960 | 3,076,121 |
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