Year | Value | 2022 | 466,140 | 2021 | 463,683 | 2020 | 461,878 | 2019 | 461,366 | 2018 | 462,276 | 2017 | 462,926 | 2016 | 463,229 | 2015 | 463,293 | 2014 | 463,134 | 2013 | 462,716 | 2012 | 462,138 | 2011 | 461,408 | 2010 | 460,442 | 2009 | 459,159 | 2008 | 457,414 | 2007 | 454,459 | 2006 | 450,318 | 2005 | 445,918 | 2004 | 441,500 | 2003 | 437,004 | 2002 | 432,518 | 2001 | 427,971 | 2000 | 423,305 | 1999 | 418,510 | 1998 | 413,525 | 1997 | 408,566 | 1996 | 404,336 | 1995 | 402,034 | 1994 | 401,132 | 1993 | 400,150 | 1992 | 398,800 | 1991 | 397,606 | 1990 | 395,252 | 1989 | 391,272 | 1988 | 387,005 | 1987 | 382,126 | 1986 | 375,943 | 1985 | 368,206 | 1984 | 359,666 | 1983 | 351,108 | 1982 | 342,720 | 1981 | 334,473 | 1980 | 326,375 | 1979 | 318,457 | 1978 | 310,788 | 1977 | 303,585 | 1976 | 297,295 | 1975 | 292,053 | 1974 | 287,485 | 1973 | 283,169 | 1972 | 278,722 | 1971 | 273,966 | 1970 | 268,980 | 1969 | 263,844 | 1968 | 258,556 | 1967 | 253,063 | 1966 | 247,083 | 1965 | 240,528 | 1964 | 233,732 | 1963 | 226,917 | 1962 | 220,167 | 1961 | 213,690 | 1960 | 207,442 |
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