| Year | Value | | 2024 | 559,855 | | 2023 | 553,666 | | 2022 | 551,711 | | 2021 | 536,128 | | 2020 | 502,925 | | 2019 | 466,053 | | 2018 | 440,821 | | 2017 | 432,120 | | 2016 | 423,999 | | 2015 | 414,275 | | 2014 | 401,849 | | 2013 | 387,180 | | 2012 | 373,199 | | 2011 | 362,157 | | 2010 | 346,575 | | 2009 | 325,527 | | 2008 | 305,742 | | 2007 | 284,100 | | 2006 | 265,098 | | 2005 | 247,636 | | 2004 | 233,101 | | 2003 | 220,817 | | 2002 | 210,270 | | 2001 | 201,115 | | 2000 | 193,191 | | 1999 | 186,279 | | 1998 | 180,063 | | 1997 | 174,450 | | 1996 | 169,493 | | 1995 | 165,228 | | 1994 | 162,379 | | 1993 | 160,784 | | 1992 | 159,559 | | 1991 | 158,606 | | 1990 | 157,606 | | 1989 | 156,460 | | 1988 | 155,350 | | 1987 | 154,401 | | 1986 | 153,761 | | 1985 | 153,503 | | 1984 | 153,760 | | 1983 | 154,573 | | 1982 | 156,132 | | 1981 | 159,503 | | 1980 | 164,700 | | 1979 | 165,825 | | 1978 | 163,376 | | 1977 | 163,207 | | 1976 | 165,686 | | 1975 | 161,452 |
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