Year | Value | 2022 | 266,933 | 2021 | 252,232 | 2020 | 251,023 | 2019 | 246,617 | 2018 | 243,034 | 2017 | 240,291 | 2016 | 238,231 | 2015 | 238,114 | 2014 | 242,392 | 2013 | 253,773 | 2012 | 269,548 | 2011 | 287,322 | 2010 | 306,034 | 2009 | 320,699 | 2008 | 329,050 | 2007 | 333,327 | 2006 | 336,121 | 2005 | 338,137 | 2004 | 340,558 | 2003 | 342,693 | 2002 | 344,586 | 2001 | 348,252 | 2000 | 355,683 | 1999 | 369,336 | 1998 | 387,372 | 1997 | 406,698 | 1996 | 426,059 | 1995 | 444,684 | 1994 | 458,540 | 1993 | 464,483 | 1992 | 461,325 | 1991 | 449,375 | 1990 | 432,032 | 1989 | 409,530 | 1988 | 385,406 | 1987 | 367,222 | 1986 | 356,712 | 1985 | 352,111 | 1984 | 353,711 | 1983 | 358,158 | 1982 | 359,087 | 1981 | 355,718 | 1980 | 350,180 | 1979 | 340,930 | 1978 | 333,806 | 1977 | 337,377 | 1976 | 349,529 | 1975 | 365,535 | 1974 | 383,316 | 1973 | 399,431 | 1972 | 411,532 | 1971 | 420,755 | 1970 | 430,335 | 1969 | 437,689 | 1968 | 442,416 | 1967 | 449,101 | 1966 | 454,122 | 1965 | 449,648 | 1964 | 439,638 | 1963 | 429,298 | 1962 | 410,618 | 1961 | 385,860 | 1960 | 369,414 |
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