Year | Value | 2022 | 471,774 | 2021 | 450,360 | 2020 | 437,936 | 2019 | 413,394 | 2018 | 389,338 | 2017 | 371,541 | 2016 | 360,820 | 2015 | 355,591 | 2014 | 356,017 | 2013 | 360,253 | 2012 | 361,465 | 2011 | 357,348 | 2010 | 349,919 | 2009 | 338,345 | 2008 | 327,663 | 2007 | 326,525 | 2006 | 334,500 | 2005 | 346,470 | 2004 | 360,543 | 2003 | 373,968 | 2002 | 383,698 | 2001 | 391,332 | 2000 | 397,939 | 1999 | 401,747 | 1998 | 404,476 | 1997 | 409,137 | 1996 | 412,640 | 1995 | 407,573 | 1994 | 397,563 | 1993 | 387,506 | 1992 | 370,490 | 1991 | 348,208 | 1990 | 333,198 | 1989 | 320,606 | 1988 | 302,435 | 1987 | 285,926 | 1986 | 273,655 | 1985 | 263,770 | 1984 | 258,836 | 1983 | 259,929 | 1982 | 265,366 | 1981 | 274,110 | 1980 | 284,676 | 1979 | 294,324 | 1978 | 301,297 | 1977 | 305,485 | 1976 | 307,565 | 1975 | 308,837 | 1974 | 310,808 | 1973 | 315,310 | 1972 | 321,797 | 1971 | 327,475 | 1970 | 331,356 | 1969 | 325,235 | 1968 | 298,707 | 1967 | 261,710 | 1966 | 226,706 | 1965 | 202,189 | 1964 | 201,122 | 1963 | 226,295 | 1962 | 262,933 | 1961 | 298,249 | 1960 | 329,643 |
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