| Year | Value | | 2023 | 5,822,506 | | 2022 | 5,798,042 | | 2021 | 5,755,809 | | 2020 | 5,692,217 | | 2019 | 5,616,706 | | 2018 | 5,534,464 | | 2017 | 5,453,517 | | 2016 | 5,368,846 | | 2015 | 5,279,540 | | 2014 | 5,189,181 | | 2013 | 5,098,727 | | 2012 | 5,008,847 | | 2011 | 4,920,166 | | 2010 | 4,835,557 | | 2009 | 4,759,039 | | 2008 | 4,643,726 | | 2007 | 4,530,068 | | 2006 | 4,461,940 | | 2005 | 4,396,406 | | 2004 | 4,335,079 | | 2003 | 4,280,744 | | 2002 | 4,232,008 | | 2001 | 4,184,325 | | 2000 | 4,135,854 | | 1999 | 4,085,971 | | 1998 | 4,057,628 | | 1997 | 4,043,596 | | 1996 | 4,028,686 | | 1995 | 4,011,953 | | 1994 | 3,989,328 | | 1993 | 3,959,053 | | 1992 | 3,922,231 | | 1991 | 3,885,855 | | 1990 | 3,856,598 | | 1989 | 3,825,371 | | 1988 | 3,772,840 | | 1987 | 3,705,470 | | 1986 | 3,635,448 | | 1985 | 3,568,397 | | 1984 | 3,500,598 | | 1983 | 3,432,673 | | 1982 | 3,370,646 | | 1981 | 3,310,162 | | 1980 | 3,251,327 | | 1979 | 3,196,843 | | 1978 | 3,137,001 | | 1977 | 3,072,874 | | 1976 | 3,011,670 | | 1975 | 2,952,446 | | 1974 | 2,892,038 |
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