Year | Value | 2022 | 238,136 | 2021 | 234,701 | 2020 | 234,471 | 2019 | 234,746 | 2018 | 234,744 | 2017 | 234,305 | 2016 | 232,807 | 2015 | 231,490 | 2014 | 233,524 | 2013 | 240,352 | 2012 | 252,520 | 2011 | 269,290 | 2010 | 288,883 | 2009 | 310,634 | 2008 | 333,763 | 2007 | 356,353 | 2006 | 377,492 | 2005 | 394,884 | 2004 | 405,948 | 2003 | 412,296 | 2002 | 414,746 | 2001 | 411,534 | 2000 | 406,007 | 1999 | 401,501 | 1998 | 395,990 | 1997 | 390,094 | 1996 | 384,654 | 1995 | 379,066 | 1994 | 373,542 | 1993 | 367,369 | 1992 | 361,356 | 1991 | 358,398 | 1990 | 357,404 | 1989 | 355,489 | 1988 | 352,670 | 1987 | 350,601 | 1986 | 349,215 | 1985 | 351,116 | 1984 | 358,017 | 1983 | 372,302 | 1982 | 392,659 | 1981 | 415,015 | 1980 | 436,953 | 1979 | 456,096 | 1978 | 468,168 | 1977 | 472,153 | 1976 | 471,018 | 1975 | 467,011 | 1974 | 460,305 | 1973 | 450,583 | 1972 | 438,895 | 1971 | 426,509 | 1970 | 413,938 | 1969 | 403,304 | 1968 | 394,307 | 1967 | 382,767 | 1966 | 366,444 | 1965 | 345,344 | 1964 | 320,089 | 1963 | 295,719 | 1962 | 280,511 | 1961 | 278,537 | 1960 | 289,597 |
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