Year | Value | 2022 | 283,748 | 2021 | 281,266 | 2020 | 274,864 | 2019 | 268,683 | 2018 | 265,344 | 2017 | 265,129 | 2016 | 267,485 | 2015 | 271,718 | 2014 | 276,510 | 2013 | 281,435 | 2012 | 285,805 | 2011 | 288,727 | 2010 | 290,770 | 2009 | 295,860 | 2008 | 304,506 | 2007 | 315,833 | 2006 | 329,314 | 2005 | 343,976 | 2004 | 356,939 | 2003 | 367,070 | 2002 | 376,456 | 2001 | 385,617 | 2000 | 392,245 | 1999 | 397,984 | 1998 | 403,895 | 1997 | 406,309 | 1996 | 405,269 | 1995 | 401,266 | 1994 | 395,446 | 1993 | 390,290 | 1992 | 386,052 | 1991 | 382,453 | 1990 | 381,737 | 1989 | 385,075 | 1988 | 390,190 | 1987 | 395,293 | 1986 | 399,742 | 1985 | 402,083 | 1984 | 400,921 | 1983 | 397,379 | 1982 | 392,696 | 1981 | 385,079 | 1980 | 376,378 | 1979 | 369,958 | 1978 | 364,723 | 1977 | 362,105 | 1976 | 361,519 | 1975 | 354,915 | 1974 | 344,328 | 1973 | 341,621 | 1972 | 338,916 | 1971 | 332,966 | 1970 | 328,960 | 1969 | 328,051 | 1968 | 328,320 | 1967 | 329,153 | 1966 | 331,844 | 1965 | 334,753 | 1964 | 339,446 | 1963 | 344,825 | 1962 | 351,600 | 1961 | 361,426 | 1960 | 368,094 |
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