| Year | Value | | 2022 | 6,834,253 | | 2021 | 6,629,666 | | 2020 | 6,418,700 | | 2019 | 6,216,210 | | 2018 | 6,000,858 | | 2017 | 5,731,919 | | 2016 | 5,346,021 | | 2015 | 5,064,196 | | 2014 | 4,945,202 | | 2013 | 4,761,562 | | 2012 | 4,557,813 | | 2011 | 4,465,793 | | 2010 | 4,377,279 | | 2009 | 4,224,326 | | 2008 | 4,148,977 | | 2007 | 4,127,273 | | 2006 | 4,106,159 | | 2005 | 4,139,860 | | 2004 | 4,282,879 | | 2003 | 4,357,846 | | 2002 | 4,360,668 | | 2001 | 4,354,866 | | 2000 | 4,243,883 | | 1999 | 4,023,958 | | 1998 | 3,905,872 | | 1997 | 3,870,990 | | 1996 | 3,774,792 | | 1995 | 3,759,590 | | 1994 | 3,822,017 | | 1993 | 3,730,047 | | 1992 | 3,553,587 | | 1991 | 3,468,101 | | 1990 | 3,369,953 | | 1989 | 3,241,324 | | 1988 | 3,166,250 | | 1987 | 3,161,423 | | 1986 | 3,154,812 | | 1985 | 3,140,378 | | 1984 | 3,115,910 | | 1983 | 3,078,675 | | 1982 | 3,028,066 | | 1981 | 2,939,423 | | 1980 | 2,850,548 | | 1979 | 2,771,695 | | 1978 | 2,657,502 | | 1977 | 2,563,736 | | 1976 | 2,496,543 | | 1975 | 2,421,446 | | 1974 | 2,368,514 | | 1973 | 2,371,132 | | 1972 | 2,360,982 | | 1971 | 2,341,801 | | 1970 | 2,357,103 | | 1969 | 2,370,926 | | 1968 | 2,351,534 | | 1967 | 2,311,921 | | 1966 | 2,299,545 | | 1965 | 2,298,181 | | 1964 | 2,283,075 | | 1963 | 2,278,105 | | 1962 | 2,283,351 | | 1961 | 2,259,822 | | 1960 | 2,213,496 |
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