| Year | Value | | 2024 | 9,112,601 | | 2023 | 9,367,217 | | 2022 | 9,315,399 | | 2021 | 9,107,933 | | 2020 | 9,230,424 | | 2019 | 9,363,009 | | 2018 | 9,634,075 | | 2017 | 9,611,786 | | 2016 | 9,432,416 | | 2015 | 9,998,894 | | 2014 | 12,655,911 | | 2013 | 16,355,111 | | 2012 | 19,711,953 | | 2011 | 21,522,720 | | 2010 | 22,420,172 | | 2009 | 23,167,705 | | 2008 | 23,792,613 | | 2007 | 24,317,530 | | 2006 | 25,015,023 | | 2005 | 25,422,977 | | 2004 | 25,764,177 | | 2003 | 26,057,894 | | 2002 | 26,324,340 | | 2001 | 26,582,682 | | 2000 | 26,843,871 | | 1999 | 27,065,775 | | 1998 | 27,220,837 | | 1997 | 27,324,279 | | 1996 | 27,388,321 | | 1995 | 27,421,214 | | 1994 | 27,414,584 | | 1993 | 27,385,771 | | 1992 | 27,375,407 | | 1991 | 27,393,771 | | 1990 | 27,430,071 | | 1989 | 27,472,001 | | 1988 | 27,517,626 | | 1987 | 27,563,115 | | 1986 | 27,592,290 | | 1985 | 27,582,491 | | 1984 | 27,552,199 | | 1983 | 27,505,345 | | 1982 | 27,426,468 | | 1981 | 27,369,128 | | 1980 | 27,297,908 | | 1979 | 27,173,474 | | 1978 | 27,025,930 | | 1977 | 26,851,156 | | 1976 | 26,670,461 |
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