| Year | Value | | 2022 | 601,080 | | 2021 | 598,054 | | 2020 | 583,992 | | 2019 | 558,517 | | 2018 | 527,479 | | 2017 | 495,485 | | 2016 | 464,957 | | 2015 | 439,650 | | 2014 | 420,838 | | 2013 | 403,455 | | 2012 | 384,665 | | 2011 | 366,284 | | 2010 | 349,585 | | 2009 | 334,175 | | 2008 | 319,832 | | 2007 | 306,519 | | 2006 | 292,058 | | 2005 | 277,986 | | 2004 | 266,177 | | 2003 | 255,372 | | 2002 | 246,428 | | 2001 | 240,750 | | 2000 | 237,326 | | 1999 | 234,114 | | 1998 | 231,612 | | 1997 | 230,564 | | 1996 | 231,310 | | 1995 | 233,160 | | 1994 | 237,460 | | 1993 | 244,201 | | 1992 | 249,746 | | 1991 | 249,989 | | 1990 | 246,607 | | 1989 | 242,256 | | 1988 | 233,597 | | 1987 | 222,284 | | 1986 | 208,887 | | 1985 | 193,165 | | 1984 | 178,300 | | 1983 | 170,673 | | 1982 | 166,187 | | 1981 | 158,437 | | 1980 | 140,299 | | 1979 | 125,342 | | 1978 | 126,952 | | 1977 | 128,929 | | 1976 | 127,162 | | 1975 | 124,225 | | 1974 | 121,341 | | 1973 | 118,814 | | 1972 | 117,090 | | 1971 | 115,800 | | 1970 | 114,708 | | 1969 | 113,344 | | 1968 | 111,808 | | 1967 | 110,372 | | 1966 | 108,592 | | 1965 | 106,249 | | 1964 | 103,374 | | 1963 | 99,845 | | 1962 | 96,033 | | 1961 | 92,892 | | 1960 | 90,906 |
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