| Year | Value | | 2024 | 980,762 | | 2023 | 934,359 | | 2022 | 900,252 | | 2021 | 875,843 | | 2020 | 850,315 | | 2019 | 814,129 | | 2018 | 773,935 | | 2017 | 729,132 | | 2016 | 684,177 | | 2015 | 646,926 | | 2014 | 618,056 | | 2013 | 588,953 | | 2012 | 562,171 | | 2011 | 539,743 | | 2010 | 522,290 | | 2009 | 507,826 | | 2008 | 496,736 | | 2007 | 490,395 | | 2006 | 488,231 | | 2005 | 486,942 | | 2004 | 485,636 | | 2003 | 482,741 | | 2002 | 477,247 | | 2001 | 468,211 | | 2000 | 457,707 | | 1999 | 448,149 | | 1998 | 439,843 | | 1997 | 432,106 | | 1996 | 425,134 | | 1995 | 418,599 | | 1994 | 409,469 | | 1993 | 396,049 | | 1992 | 380,579 | | 1991 | 364,257 | | 1990 | 349,221 | | 1989 | 338,881 | | 1988 | 333,745 | | 1987 | 331,429 | | 1986 | 326,610 | | 1985 | 320,163 | | 1984 | 311,381 | | 1983 | 301,293 | | 1982 | 291,748 | | 1981 | 282,605 | | 1980 | 273,657 | | 1979 | 264,966 | | 1978 | 257,733 | | 1977 | 251,041 | | 1976 | 244,532 | | 1975 | 238,085 |
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