Year | Value | 2022 | 310,908 | 2021 | 309,284 | 2020 | 306,716 | 2019 | 303,281 | 2018 | 299,360 | 2017 | 294,814 | 2016 | 289,637 | 2015 | 284,341 | 2014 | 279,945 | 2013 | 277,105 | 2012 | 276,062 | 2011 | 277,541 | 2010 | 281,761 | 2009 | 287,174 | 2008 | 291,699 | 2007 | 296,205 | 2006 | 301,304 | 2005 | 306,743 | 2004 | 311,294 | 2003 | 313,870 | 2002 | 313,378 | 2001 | 309,724 | 2000 | 304,677 | 1999 | 298,573 | 1998 | 291,342 | 1997 | 284,989 | 1996 | 279,511 | 1995 | 273,391 | 1994 | 267,069 | 1993 | 261,483 | 1992 | 256,634 | 1991 | 251,461 | 1990 | 247,436 | 1989 | 245,965 | 1988 | 246,332 | 1987 | 247,559 | 1986 | 249,328 | 1985 | 250,453 | 1984 | 250,187 | 1983 | 248,614 | 1982 | 245,044 | 1981 | 239,427 | 1980 | 232,643 | 1979 | 225,754 | 1978 | 218,853 | 1977 | 212,973 | 1976 | 209,911 | 1975 | 209,527 | 1974 | 208,694 | 1973 | 207,166 | 1972 | 206,374 | 1971 | 205,339 | 1970 | 204,152 | 1969 | 202,657 | 1968 | 200,713 | 1967 | 198,520 | 1966 | 196,652 | 1965 | 195,368 | 1964 | 194,091 | 1963 | 192,761 | 1962 | 191,215 | 1961 | 189,817 | 1960 | 188,894 |
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