| Year | Value | | 2023 | 808,930 | | 2022 | 780,127 | | 2021 | 763,034 | | 2020 | 763,710 | | 2019 | 765,757 | | 2018 | 764,829 | | 2017 | 760,002 | | 2016 | 755,539 | | 2015 | 753,381 | | 2014 | 753,418 | | 2013 | 752,590 | | 2012 | 749,625 | | 2011 | 747,445 | | 2010 | 749,614 | | 2009 | 750,125 | | 2008 | 742,297 | | 2007 | 729,382 | | 2006 | 715,669 | | 2005 | 706,240 | | 2004 | 699,029 | | 2003 | 694,473 | | 2002 | 690,082 | | 2001 | 683,520 | | 2000 | 672,831 | | 1999 | 662,773 | | 1998 | 655,422 | | 1997 | 652,187 | | 1996 | 650,745 | | 1995 | 649,744 | | 1994 | 653,149 | | 1993 | 662,800 | | 1992 | 678,702 | | 1991 | 697,872 | | 1990 | 713,940 | | 1989 | 720,072 | | 1988 | 716,231 | | 1987 | 705,132 | | 1986 | 687,578 | | 1985 | 669,569 | | 1984 | 658,670 | | 1983 | 656,107 | | 1982 | 658,061 | | 1981 | 660,849 | | 1980 | 665,138 | | 1979 | 668,170 | | 1978 | 665,879 | | 1977 | 657,006 | | 1976 | 643,702 | | 1975 | 630,426 | | 1974 | 617,498 |
|