| Year | Value | | 2024 | 1,616,619 | | 2023 | 1,602,183 | | 2022 | 1,589,994 | | 2021 | 1,580,609 | | 2020 | 1,566,295 | | 2019 | 1,535,956 | | 2018 | 1,496,596 | | 2017 | 1,453,940 | | 2016 | 1,407,650 | | 2015 | 1,359,463 | | 2014 | 1,308,639 | | 2013 | 1,255,279 | | 2012 | 1,200,420 | | 2011 | 1,144,231 | | 2010 | 1,088,102 | | 2009 | 1,032,869 | | 2008 | 977,822 | | 2007 | 924,054 | | 2006 | 873,527 | | 2005 | 826,090 | | 2004 | 784,830 | | 2003 | 751,051 | | 2002 | 720,955 | | 2001 | 692,811 | | 2000 | 666,305 | | 1999 | 641,147 | | 1998 | 617,113 | | 1997 | 593,896 | | 1996 | 571,027 | | 1995 | 547,496 | | 1994 | 523,593 | | 1993 | 500,211 | | 1992 | 477,331 | | 1991 | 455,440 | | 1990 | 434,902 | | 1989 | 415,656 | | 1988 | 397,710 | | 1987 | 380,489 | | 1986 | 363,795 | | 1985 | 348,126 | | 1984 | 333,551 | | 1983 | 320,160 | | 1982 | 307,976 | | 1981 | 296,854 | | 1980 | 286,672 | | 1979 | 279,136 | | 1978 | 275,544 | | 1977 | 275,598 | | 1976 | 278,012 | | 1975 | 280,807 |
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