Year | Value | 2022 | 220,579 | 2021 | 222,645 | 2020 | 222,790 | 2019 | 221,322 | 2018 | 218,816 | 2017 | 218,641 | 2016 | 221,616 | 2015 | 226,874 | 2014 | 233,304 | 2013 | 241,066 | 2012 | 247,828 | 2011 | 252,460 | 2010 | 258,392 | 2009 | 264,745 | 2008 | 270,032 | 2007 | 275,509 | 2006 | 280,750 | 2005 | 285,327 | 2004 | 289,301 | 2003 | 290,430 | 2002 | 288,399 | 2001 | 285,080 | 2000 | 283,496 | 1999 | 281,908 | 1998 | 280,057 | 1997 | 280,405 | 1996 | 281,832 | 1995 | 283,328 | 1994 | 284,178 | 1993 | 283,349 | 1992 | 281,556 | 1991 | 284,711 | 1990 | 293,933 | 1989 | 306,512 | 1988 | 320,481 | 1987 | 335,090 | 1986 | 349,739 | 1985 | 363,031 | 1984 | 373,819 | 1983 | 382,061 | 1982 | 390,166 | 1981 | 401,970 | 1980 | 417,946 | 1979 | 431,813 | 1978 | 439,891 | 1977 | 441,709 | 1976 | 439,773 | 1975 | 425,806 | 1974 | 406,167 | 1973 | 400,822 | 1972 | 402,865 | 1971 | 403,463 | 1970 | 421,660 | 1969 | 450,699 | 1968 | 467,205 | 1967 | 478,153 | 1966 | 487,135 | 1965 | 491,487 | 1964 | 488,470 | 1963 | 482,492 | 1962 | 475,685 | 1961 | 466,396 | 1960 | 463,492 |
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