| Year | Value | | 2022 | 6,171,671 | | 2021 | 6,040,939 | | 2020 | 5,896,464 | | 2019 | 5,756,594 | | 2018 | 5,622,400 | | 2017 | 5,472,318 | | 2016 | 5,313,750 | | 2015 | 5,171,943 | | 2014 | 5,050,824 | | 2013 | 4,949,644 | | 2012 | 4,873,131 | | 2011 | 4,805,061 | | 2010 | 4,736,562 | | 2009 | 4,677,973 | | 2008 | 4,641,269 | | 2007 | 4,592,088 | | 2006 | 4,522,770 | | 2005 | 4,438,965 | | 2004 | 4,321,993 | | 2003 | 4,191,963 | | 2002 | 4,061,647 | | 2001 | 3,940,540 | | 2000 | 3,826,569 | | 1999 | 3,717,142 | | 1998 | 3,618,287 | | 1997 | 3,528,880 | | 1996 | 3,446,569 | | 1995 | 3,370,736 | | 1994 | 3,298,397 | | 1993 | 3,223,533 | | 1992 | 3,140,417 | | 1991 | 3,045,225 | | 1990 | 2,935,979 | | 1989 | 2,808,450 | | 1988 | 2,675,377 | | 1987 | 2,565,255 | | 1986 | 2,481,757 | | 1985 | 2,417,079 | | 1984 | 2,375,353 | | 1983 | 2,345,589 | | 1982 | 2,301,132 | | 1981 | 2,242,997 | | 1980 | 2,186,425 | | 1979 | 2,135,617 | | 1978 | 2,092,265 | | 1977 | 2,054,567 | | 1976 | 2,020,321 | | 1975 | 1,986,951 | | 1974 | 1,957,615 | | 1973 | 1,930,291 | | 1972 | 1,899,309 | | 1971 | 1,902,486 | | 1970 | 1,901,448 | | 1969 | 1,857,770 | | 1968 | 1,807,033 | | 1967 | 1,752,605 | | 1966 | 1,700,857 | | 1965 | 1,653,326 | | 1964 | 1,609,289 | | 1963 | 1,569,481 | | 1962 | 1,532,949 | | 1961 | 1,497,621 | | 1960 | 1,462,939 |
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