| Year | Value | | 2022 | 3,558,960 | | 2021 | 3,609,487 | | 2020 | 3,673,190 | | 2019 | 3,748,589 | | 2018 | 3,842,640 | | 2017 | 3,961,894 | | 2016 | 4,106,515 | | 2015 | 4,267,780 | | 2014 | 4,449,663 | | 2013 | 4,647,097 | | 2012 | 4,815,637 | | 2011 | 4,922,255 | | 2010 | 4,960,723 | | 2009 | 4,914,883 | | 2008 | 4,816,131 | | 2007 | 4,726,357 | | 2006 | 4,556,464 | | 2005 | 4,386,007 | | 2004 | 4,324,825 | | 2003 | 4,253,047 | | 2002 | 4,135,740 | | 2001 | 4,108,274 | | 2000 | 4,105,435 | | 1999 | 4,026,212 | | 1998 | 3,977,009 | | 1997 | 3,937,973 | | 1996 | 3,919,818 | | 1995 | 3,944,818 | | 1994 | 3,985,306 | | 1993 | 4,034,354 | | 1992 | 4,138,522 | | 1991 | 4,296,356 | | 1990 | 4,489,043 | | 1989 | 4,794,945 | | 1988 | 5,179,168 | | 1987 | 5,514,808 | | 1986 | 5,614,424 | | 1985 | 5,438,779 | | 1984 | 5,160,266 | | 1983 | 4,873,563 | | 1982 | 4,615,996 | | 1981 | 4,547,944 | | 1980 | 4,645,839 | | 1979 | 4,626,338 | | 1978 | 4,484,910 | | 1977 | 4,363,685 | | 1976 | 4,274,884 | | 1975 | 4,220,599 | | 1974 | 4,224,282 | | 1973 | 4,256,404 | | 1972 | 4,251,174 | | 1971 | 4,206,175 | | 1970 | 4,111,747 | | 1969 | 4,061,484 | | 1968 | 4,003,025 | | 1967 | 3,935,181 | | 1966 | 3,856,741 | | 1965 | 3,768,651 | | 1964 | 3,647,820 | | 1963 | 3,478,729 | | 1962 | 3,263,999 | | 1961 | 3,022,672 | | 1960 | 2,800,424 |
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