Year | Value | 2022 | 470,523 | 2021 | 409,368 | 2020 | 360,985 | 2019 | 333,555 | 2018 | 339,240 | 2017 | 370,586 | 2016 | 405,654 | 2015 | 432,892 | 2014 | 452,531 | 2013 | 461,068 | 2012 | 460,014 | 2011 | 454,990 | 2010 | 449,186 | 2009 | 443,532 | 2008 | 437,425 | 2007 | 429,837 | 2006 | 421,919 | 2005 | 413,599 | 2004 | 405,305 | 2003 | 397,662 | 2002 | 390,171 | 2001 | 381,267 | 2000 | 370,153 | 1999 | 356,640 | 1998 | 333,115 | 1997 | 308,075 | 1996 | 290,389 | 1995 | 273,550 | 1994 | 257,933 | 1993 | 240,742 | 1992 | 220,959 | 1991 | 203,742 | 1990 | 190,329 | 1989 | 178,377 | 1988 | 169,633 | 1987 | 163,930 | 1986 | 159,121 | 1985 | 155,297 | 1984 | 152,817 | 1983 | 150,208 | 1982 | 147,270 | 1981 | 144,254 | 1980 | 143,345 | 1979 | 141,576 | 1978 | 139,196 | 1977 | 140,306 | 1976 | 146,221 | 1975 | 153,151 | 1974 | 154,381 | 1973 | 153,027 | 1972 | 151,478 | 1971 | 150,390 | 1970 | 151,299 | 1969 | 151,007 | 1968 | 148,056 | 1967 | 145,083 | 1966 | 142,082 | 1965 | 139,038 | 1964 | 135,941 | 1963 | 132,882 | 1962 | 129,907 | 1961 | 127,038 | 1960 | 124,291 |
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