Year | Value | 2023 | 529,371 | 2022 | 516,802 | 2021 | 497,439 | 2020 | 496,388 | 2019 | 499,155 | 2018 | 506,236 | 2017 | 514,550 | 2016 | 521,876 | 2015 | 527,239 | 2014 | 531,218 | 2013 | 533,787 | 2012 | 537,831 | 2011 | 547,149 | 2010 | 566,233 | 2009 | 600,709 | 2008 | 648,675 | 2007 | 708,435 | 2006 | 766,440 | 2005 | 806,222 | 2004 | 823,606 | 2003 | 821,783 | 2002 | 814,460 | 2001 | 816,876 | 2000 | 828,890 | 1999 | 844,629 | 1998 | 871,642 | 1997 | 905,626 | 1996 | 932,190 | 1995 | 948,461 | 1994 | 962,030 | 1993 | 963,027 | 1992 | 949,609 | 1991 | 941,340 | 1990 | 939,854 | 1989 | 944,859 | 1988 | 981,222 | 1987 | 1,041,025 | 1986 | 1,040,882 | 1985 | 978,784 | 1984 | 905,658 | 1983 | 814,029 | 1982 | 711,915 | 1981 | 662,878 | 1980 | 667,067 | 1979 | 672,715 | 1978 | 678,915 | 1977 | 690,198 | 1976 | 728,342 | 1975 | 786,523 | 1974 | 836,589 |
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