| Year | Value | | 2024 | 464,524 | | 2023 | 470,318 | | 2022 | 471,581 | | 2021 | 462,485 | | 2020 | 444,009 | | 2019 | 418,692 | | 2018 | 386,933 | | 2017 | 354,502 | | 2016 | 329,977 | | 2015 | 313,307 | | 2014 | 302,621 | | 2013 | 299,702 | | 2012 | 300,580 | | 2011 | 300,254 | | 2010 | 299,250 | | 2009 | 298,086 | | 2008 | 295,833 | | 2007 | 293,492 | | 2006 | 290,889 | | 2005 | 286,776 | | 2004 | 281,664 | | 2003 | 277,045 | | 2002 | 273,434 | | 2001 | 270,395 | | 2000 | 267,379 | | 1999 | 263,506 | | 1998 | 257,975 | | 1997 | 251,161 | | 1996 | 243,212 | | 1995 | 234,099 | | 1994 | 224,721 | | 1993 | 216,308 | | 1992 | 209,448 | | 1991 | 204,294 | | 1990 | 200,519 | | 1989 | 197,467 | | 1988 | 194,882 | | 1987 | 192,343 | | 1986 | 189,446 | | 1985 | 186,380 | | 1984 | 183,289 | | 1983 | 180,092 | | 1982 | 177,099 | | 1981 | 174,708 | | 1980 | 173,000 | | 1979 | 171,758 | | 1978 | 170,604 | | 1977 | 169,209 | | 1976 | 167,515 | | 1975 | 165,718 |
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