| Year | Value | | 2022 | 3,459,538 | | 2021 | 3,488,504 | | 2020 | 3,515,183 | | 2019 | 3,538,033 | | 2018 | 3,557,457 | | 2017 | 3,568,601 | | 2016 | 3,562,463 | | 2015 | 3,538,149 | | 2014 | 3,504,627 | | 2013 | 3,469,343 | | 2012 | 3,434,931 | | 2011 | 3,404,448 | | 2010 | 3,387,806 | | 2009 | 3,388,701 | | 2008 | 3,394,355 | | 2007 | 3,404,781 | | 2006 | 3,419,036 | | 2005 | 3,421,596 | | 2004 | 3,406,435 | | 2003 | 3,389,092 | | 2002 | 3,386,462 | | 2001 | 3,412,529 | | 2000 | 3,482,725 | | 1999 | 3,603,865 | | 1998 | 3,766,116 | | 1997 | 3,943,846 | | 1996 | 4,116,123 | | 1995 | 4,260,623 | | 1994 | 4,359,742 | | 1993 | 4,415,096 | | 1992 | 4,440,017 | | 1991 | 4,448,361 | | 1990 | 4,448,662 | | 1989 | 4,444,553 | | 1988 | 4,433,925 | | 1987 | 4,411,127 | | 1986 | 4,371,082 | | 1985 | 4,311,312 | | 1984 | 4,237,384 | | 1983 | 4,154,997 | | 1982 | 4,065,907 | | 1981 | 3,976,674 | | 1980 | 3,896,242 | | 1979 | 3,814,142 | | 1978 | 3,743,465 | | 1977 | 3,686,441 | | 1976 | 3,616,199 | | 1975 | 3,533,048 | | 1974 | 3,449,660 | | 1973 | 3,359,298 | | 1972 | 3,262,533 | | 1971 | 3,180,208 | | 1970 | 3,126,993 | | 1969 | 3,105,994 | | 1968 | 3,107,229 | | 1967 | 3,118,739 | | 1966 | 3,089,255 | | 1965 | 3,046,370 | | 1964 | 3,021,879 | | 1963 | 2,979,799 | | 1962 | 2,928,709 | | 1961 | 2,891,379 | | 1960 | 2,824,315 |
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