| Year | Value | | 2022 | 411,046 | | 2021 | 403,696 | | 2020 | 394,775 | | 2019 | 386,160 | | 2018 | 377,184 | | 2017 | 367,664 | | 2016 | 357,487 | | 2015 | 339,301 | | 2014 | 306,241 | | 2013 | 266,717 | | 2012 | 246,751 | | 2011 | 243,289 | | 2010 | 237,816 | | 2009 | 233,906 | | 2008 | 230,544 | | 2007 | 226,811 | | 2006 | 214,365 | | 2005 | 201,544 | | 2004 | 197,217 | | 2003 | 193,127 | | 2002 | 189,329 | | 2001 | 185,361 | | 2000 | 181,226 | | 1999 | 176,720 | | 1998 | 171,529 | | 1997 | 165,639 | | 1996 | 158,826 | | 1995 | 150,580 | | 1994 | 140,859 | | 1993 | 130,195 | | 1992 | 119,411 | | 1991 | 109,271 | | 1990 | 100,149 | | 1989 | 92,624 | | 1988 | 86,502 | | 1987 | 80,967 | | 1986 | 75,902 | | 1985 | 71,269 | | 1984 | 67,129 | | 1983 | 63,508 | | 1982 | 60,269 | | 1981 | 57,352 | | 1980 | 54,837 | | 1979 | 52,751 | | 1978 | 51,046 | | 1977 | 49,754 | | 1976 | 48,960 | | 1975 | 48,550 | | 1974 | 48,333 | | 1973 | 48,141 | | 1972 | 47,774 | | 1971 | 46,955 | | 1970 | 45,372 | | 1969 | 42,930 | | 1968 | 39,884 | | 1967 | 36,643 | | 1966 | 33,595 | | 1965 | 31,010 | | 1964 | 28,993 | | 1963 | 27,442 | | 1962 | 26,141 | | 1961 | 24,955 | | 1960 | 23,817 |
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