| Year | Value | | 2022 | 528,567 | | 2021 | 516,203 | | 2020 | 503,199 | | 2019 | 488,053 | | 2018 | 471,365 | | 2017 | 454,576 | | 2016 | 438,280 | | 2015 | 421,563 | | 2014 | 403,562 | | 2013 | 385,135 | | 2012 | 367,564 | | 2011 | 351,695 | | 2010 | 337,732 | | 2009 | 325,463 | | 2008 | 314,508 | | 2007 | 306,017 | | 2006 | 299,245 | | 2005 | 291,767 | | 2004 | 283,584 | | 2003 | 274,768 | | 2002 | 265,447 | | 2001 | 255,981 | | 2000 | 246,580 | | 1999 | 237,138 | | 1998 | 227,466 | | 1997 | 217,828 | | 1996 | 208,762 | | 1995 | 200,539 | | 1994 | 193,046 | | 1993 | 186,378 | | 1992 | 180,432 | | 1991 | 174,673 | | 1990 | 168,863 | | 1989 | 163,089 | | 1988 | 157,359 | | 1987 | 151,852 | | 1986 | 147,108 | | 1985 | 143,343 | | 1984 | 140,366 | | 1983 | 138,146 | | 1982 | 136,514 | | 1981 | 134,886 | | 1980 | 132,978 | | 1979 | 131,120 | | 1978 | 129,339 | | 1977 | 127,317 | | 1976 | 125,064 | | 1975 | 122,604 | | 1974 | 119,868 | | 1973 | 116,702 | | 1972 | 113,040 | | 1971 | 109,449 | | 1970 | 107,133 | | 1969 | 105,451 | | 1968 | 103,830 | | 1967 | 102,685 | | 1966 | 101,421 | | 1965 | 99,729 | | 1964 | 97,665 | | 1963 | 95,181 | | 1962 | 92,329 | | 1961 | 89,484 | | 1960 | 86,866 |
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