| Year | Value | | 2024 | 623,831 | | 2023 | 623,529 | | 2022 | 623,591 | | 2021 | 625,053 | | 2020 | 626,590 | | 2019 | 626,753 | | 2018 | 626,438 | | 2017 | 625,982 | | 2016 | 625,353 | | 2015 | 624,651 | | 2014 | 623,744 | | 2013 | 622,587 | | 2012 | 621,418 | | 2011 | 620,345 | | 2010 | 619,428 | | 2009 | 618,294 | | 2008 | 616,969 | | 2007 | 615,875 | | 2006 | 615,025 | | 2005 | 614,261 | | 2004 | 613,353 | | 2003 | 612,267 | | 2002 | 609,828 | | 2001 | 607,389 | | 2000 | 604,950 | | 1999 | 606,001 | | 1998 | 607,662 | | 1997 | 609,520 | | 1996 | 611,003 | | 1995 | 611,712 | | 1994 | 611,389 | | 1993 | 610,170 | | 1992 | 608,516 | | 1991 | 607,105 | | 1990 | 606,372 | | 1989 | 606,571 | | 1988 | 607,413 | | 1987 | 608,144 | | 1986 | 607,711 | | 1985 | 605,398 | | 1984 | 600,884 | | 1983 | 594,506 | | 1982 | 587,001 | | 1981 | 579,445 | | 1980 | 572,608 | | 1979 | 566,888 | | 1978 | 562,065 | | 1977 | 557,576 | | 1976 | 552,562 | | 1975 | 546,487 |
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