| Year | Value | | 2024 | 605,579 | | 2023 | 577,438 | | 2022 | 563,370 | | 2021 | 558,521 | | 2020 | 559,322 | | 2019 | 564,575 | | 2018 | 571,586 | | 2017 | 578,293 | | 2016 | 597,601 | | 2015 | 632,468 | | 2014 | 669,737 | | 2013 | 705,938 | | 2012 | 738,052 | | 2011 | 751,369 | | 2010 | 742,970 | | 2009 | 727,356 | | 2008 | 709,895 | | 2007 | 691,786 | | 2006 | 667,346 | | 2005 | 643,564 | | 2004 | 623,739 | | 2003 | 599,185 | | 2002 | 572,957 | | 2001 | 550,408 | | 2000 | 531,708 | | 1999 | 511,253 | | 1998 | 482,477 | | 1997 | 447,631 | | 1996 | 412,562 | | 1995 | 380,778 | | 1994 | 360,761 | | 1993 | 354,983 | | 1992 | 370,245 | | 1991 | 377,161 | | 1990 | 362,083 | | 1989 | 349,583 | | 1988 | 341,802 | | 1987 | 342,143 | | 1986 | 342,031 | | 1985 | 336,898 | | 1984 | 331,756 | | 1983 | 326,470 | | 1982 | 317,842 | | 1981 | 306,586 | | 1980 | 283,078 | | 1979 | 260,423 | | 1978 | 249,437 | | 1977 | 235,735 | | 1976 | 220,324 | | 1975 | 204,700 |
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