| Year | Value | | 2022 | 576,607 | | 2021 | 554,570 | | 2020 | 534,012 | | 2019 | 513,223 | | 2018 | 491,829 | | 2017 | 470,584 | | 2016 | 449,607 | | 2015 | 429,006 | | 2014 | 408,744 | | 2013 | 389,748 | | 2012 | 371,813 | | 2011 | 354,197 | | 2010 | 337,234 | | 2009 | 321,361 | | 2008 | 307,808 | | 2007 | 297,206 | | 2006 | 289,341 | | 2005 | 283,517 | | 2004 | 279,190 | | 2003 | 275,587 | | 2002 | 271,671 | | 2001 | 267,007 | | 2000 | 261,277 | | 1999 | 254,103 | | 1998 | 245,913 | | 1997 | 238,388 | | 1996 | 232,442 | | 1995 | 227,668 | | 1994 | 223,871 | | 1993 | 220,572 | | 1992 | 216,634 | | 1991 | 211,734 | | 1990 | 206,534 | | 1989 | 201,514 | | 1988 | 201,540 | | 1987 | 202,804 | | 1986 | 198,845 | | 1985 | 193,336 | | 1984 | 187,884 | | 1983 | 182,399 | | 1982 | 176,879 | | 1981 | 171,440 | | 1980 | 166,236 | | 1979 | 161,500 | | 1978 | 157,596 | | 1977 | 154,893 | | 1976 | 153,592 | | 1975 | 149,539 | | 1974 | 142,131 | | 1973 | 134,988 | | 1972 | 128,146 | | 1971 | 121,706 | | 1970 | 115,782 | | 1969 | 110,404 | | 1968 | 105,217 | | 1967 | 100,067 | | 1966 | 95,117 | | 1965 | 90,343 | | 1964 | 85,744 | | 1963 | 81,618 | | 1962 | 77,962 | | 1961 | 74,520 | | 1960 | 71,356 |
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