| Year | Value | | 2024 | 474,461 | | 2023 | 463,439 | | 2022 | 452,539 | | 2021 | 442,048 | | 2020 | 431,811 | | 2019 | 420,783 | | 2018 | 408,861 | | 2017 | 397,025 | | 2016 | 385,626 | | 2015 | 374,544 | | 2014 | 363,769 | | 2013 | 353,356 | | 2012 | 343,315 | | 2011 | 333,580 | | 2010 | 324,132 | | 2009 | 314,995 | | 2008 | 306,179 | | 2007 | 297,670 | | 2006 | 289,438 | | 2005 | 281,486 | | 2004 | 273,993 | | 2003 | 266,155 | | 2002 | 256,632 | | 2001 | 245,904 | | 2000 | 235,202 | | 1999 | 224,517 | | 1998 | 214,358 | | 1997 | 206,021 | | 1996 | 199,064 | | 1995 | 192,275 | | 1994 | 185,448 | | 1993 | 178,759 | | 1992 | 172,351 | | 1991 | 166,455 | | 1990 | 161,053 | | 1989 | 156,011 | | 1988 | 151,451 | | 1987 | 147,324 | | 1986 | 143,340 | | 1985 | 139,353 | | 1984 | 135,415 | | 1983 | 131,563 | | 1982 | 127,757 | | 1981 | 124,010 | | 1980 | 120,329 | | 1979 | 116,698 | | 1978 | 113,091 | | 1977 | 109,553 | | 1976 | 106,182 | | 1975 | 103,037 |
|