| Year | Value | | 2022 | 4,097,289 | | 2021 | 3,936,861 | | 2020 | 3,641,046 | | 2019 | 3,169,707 | | 2018 | 2,674,044 | | 2017 | 2,304,845 | | 2016 | 2,169,186 | | 2015 | 2,367,459 | | 2014 | 2,837,961 | | 2013 | 3,431,971 | | 2012 | 3,977,044 | | 2011 | 4,229,480 | | 2010 | 4,192,683 | | 2009 | 3,972,602 | | 2008 | 3,623,679 | | 2007 | 3,312,883 | | 2006 | 3,144,266 | | 2005 | 3,163,032 | | 2004 | 3,348,065 | | 2003 | 3,641,180 | | 2002 | 3,872,167 | | 2001 | 4,009,175 | | 2000 | 4,068,726 | | 1999 | 4,033,704 | | 1998 | 3,920,870 | | 1997 | 3,713,441 | | 1996 | 3,439,859 | | 1995 | 3,132,188 | | 1994 | 2,849,601 | | 1993 | 2,632,402 | | 1992 | 2,462,992 | | 1991 | 2,356,416 | | 1990 | 2,376,405 | | 1989 | 2,518,187 | | 1988 | 2,667,567 | | 1987 | 2,880,797 | | 1986 | 3,134,531 | | 1985 | 3,288,938 | | 1984 | 3,299,956 | | 1983 | 3,237,077 | | 1982 | 3,161,870 | | 1981 | 3,069,674 | | 1980 | 2,990,175 | | 1979 | 2,907,975 | | 1978 | 2,831,454 | | 1977 | 2,748,729 | | 1976 | 2,668,990 | | 1975 | 2,585,431 | | 1974 | 2,476,142 | | 1973 | 2,331,104 | | 1972 | 2,193,872 | | 1971 | 2,069,347 | | 1970 | 1,965,809 | | 1969 | 1,892,355 | | 1968 | 1,826,789 | | 1967 | 1,773,209 | | 1966 | 1,708,619 | | 1965 | 1,638,805 | | 1964 | 1,566,055 | | 1963 | 1,543,804 | | 1962 | 1,530,514 | | 1961 | 1,497,030 | | 1960 | 1,477,518 |
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