| Year | Value | | 2022 | 516,399 | | 2021 | 496,335 | | 2020 | 475,292 | | 2019 | 454,081 | | 2018 | 433,328 | | 2017 | 413,656 | | 2016 | 395,636 | | 2015 | 379,497 | | 2014 | 365,245 | | 2013 | 352,950 | | 2012 | 342,126 | | 2011 | 332,242 | | 2010 | 323,201 | | 2009 | 314,570 | | 2008 | 305,959 | | 2007 | 297,397 | | 2006 | 288,836 | | 2005 | 280,090 | | 2004 | 271,346 | | 2003 | 262,807 | | 2002 | 254,395 | | 2001 | 246,077 | | 2000 | 237,989 | | 1999 | 230,124 | | 1998 | 222,507 | | 1997 | 215,439 | | 1996 | 208,794 | | 1995 | 202,157 | | 1994 | 195,374 | | 1993 | 188,923 | | 1992 | 185,003 | | 1991 | 184,082 | | 1990 | 184,319 | | 1989 | 185,143 | | 1988 | 186,023 | | 1987 | 184,592 | | 1986 | 180,409 | | 1985 | 175,272 | | 1984 | 170,063 | | 1983 | 165,307 | | 1982 | 161,139 | | 1981 | 157,404 | | 1980 | 153,828 | | 1979 | 150,375 | | 1978 | 147,095 | | 1977 | 144,035 | | 1976 | 141,423 | | 1975 | 139,360 | | 1974 | 137,675 | | 1973 | 136,263 | | 1972 | 135,075 | | 1971 | 134,006 | | 1970 | 132,954 | | 1969 | 131,877 | | 1968 | 130,790 | | 1967 | 129,642 | | 1966 | 128,447 | | 1965 | 127,208 | | 1964 | 125,903 | | 1963 | 124,533 | | 1962 | 123,077 | | 1961 | 121,542 | | 1960 | 119,931 |
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