Year | Value | 2022 | 521,616 | 2021 | 515,943 | 2020 | 509,021 | 2019 | 501,375 | 2018 | 492,646 | 2017 | 481,534 | 2016 | 467,528 | 2015 | 450,990 | 2014 | 431,538 | 2013 | 408,863 | 2012 | 384,449 | 2011 | 361,088 | 2010 | 340,167 | 2009 | 321,817 | 2008 | 306,586 | 2007 | 293,984 | 2006 | 282,848 | 2005 | 272,218 | 2004 | 261,757 | 2003 | 251,631 | 2002 | 243,647 | 2001 | 238,743 | 2000 | 235,082 | 1999 | 231,305 | 1998 | 227,039 | 1997 | 219,250 | 1996 | 192,982 | 1995 | 165,038 | 1994 | 203,785 | 1993 | 246,481 | 1992 | 241,253 | 1991 | 237,414 | 1990 | 233,532 | 1989 | 229,587 | 1988 | 224,900 | 1987 | 217,997 | 1986 | 209,565 | 1985 | 201,455 | 1984 | 194,479 | 1983 | 186,412 | 1982 | 175,829 | 1981 | 163,970 | 1980 | 151,600 | 1979 | 139,320 | 1978 | 129,053 | 1977 | 120,627 | 1976 | 112,800 | 1975 | 106,308 | 1974 | 101,298 | 1973 | 97,741 | 1972 | 95,510 | 1971 | 94,404 | 1970 | 94,055 | 1969 | 94,245 | 1968 | 94,916 | 1967 | 95,765 | 1966 | 96,608 | 1965 | 97,456 | 1964 | 98,287 | 1963 | 99,024 | 1962 | 99,174 | 1961 | 98,755 | 1960 | 97,721 |
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