Year | Value | 2022 | 236,741 | 2021 | 230,437 | 2020 | 237,484 | 2019 | 243,833 | 2018 | 253,989 | 2017 | 266,946 | 2016 | 281,880 | 2015 | 297,697 | 2014 | 310,424 | 2013 | 319,251 | 2012 | 325,584 | 2011 | 329,216 | 2010 | 332,019 | 2009 | 335,333 | 2008 | 336,665 | 2007 | 337,404 | 2006 | 340,116 | 2005 | 344,776 | 2004 | 355,158 | 2003 | 371,294 | 2002 | 388,621 | 2001 | 406,777 | 2000 | 426,030 | 1999 | 440,328 | 1998 | 445,296 | 1997 | 441,444 | 1996 | 429,347 | 1995 | 410,709 | 1994 | 387,685 | 1993 | 365,207 | 1992 | 348,191 | 1991 | 338,043 | 1990 | 334,836 | 1989 | 337,469 | 1988 | 341,976 | 1987 | 343,040 | 1986 | 339,726 | 1985 | 333,278 | 1984 | 323,639 | 1983 | 317,210 | 1982 | 320,730 | 1981 | 332,541 | 1980 | 349,116 | 1979 | 367,495 | 1978 | 382,920 | 1977 | 394,375 | 1976 | 403,447 | 1975 | 410,148 | 1974 | 414,205 | 1973 | 418,126 | 1972 | 424,044 | 1971 | 428,887 | 1970 | 428,301 | 1969 | 423,009 | 1968 | 414,272 | 1967 | 397,013 | 1966 | 373,541 | 1965 | 355,853 | 1964 | 340,821 | 1963 | 321,457 | 1962 | 304,383 | 1961 | 291,922 | 1960 | 283,883 |
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