| Year | Value | | 2024 | 1,559,004 | | 2023 | 1,549,599 | | 2022 | 1,543,746 | | 2021 | 1,540,545 | | 2020 | 1,536,555 | | 2019 | 1,526,976 | | 2018 | 1,510,611 | | 2017 | 1,488,253 | | 2016 | 1,461,741 | | 2015 | 1,431,444 | | 2014 | 1,396,094 | | 2013 | 1,355,953 | | 2012 | 1,312,029 | | 2011 | 1,265,435 | | 2010 | 1,217,227 | | 2009 | 1,168,306 | | 2008 | 1,119,353 | | 2007 | 1,070,761 | | 2006 | 1,022,860 | | 2005 | 976,415 | | 2004 | 932,019 | | 2003 | 887,087 | | 2002 | 842,682 | | 2001 | 802,019 | | 2000 | 763,852 | | 1999 | 727,151 | | 1998 | 694,301 | | 1997 | 664,378 | | 1996 | 634,391 | | 1995 | 605,375 | | 1994 | 577,933 | | 1993 | 552,384 | | 1992 | 529,137 | | 1991 | 508,799 | | 1990 | 491,268 | | 1989 | 476,207 | | 1988 | 463,907 | | 1987 | 453,695 | | 1986 | 444,132 | | 1985 | 434,500 | | 1984 | 424,629 | | 1983 | 414,283 | | 1982 | 403,743 | | 1981 | 393,385 | | 1980 | 383,083 | | 1979 | 372,699 | | 1978 | 362,084 | | 1977 | 351,327 | | 1976 | 340,914 | | 1975 | 330,952 |
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