Year | Value | 2022 | 248,469 | 2021 | 238,022 | 2020 | 236,841 | 2019 | 236,681 | 2018 | 237,149 | 2017 | 238,560 | 2016 | 242,317 | 2015 | 249,548 | 2014 | 259,441 | 2013 | 270,597 | 2012 | 281,430 | 2011 | 287,733 | 2010 | 291,725 | 2009 | 297,373 | 2008 | 301,214 | 2007 | 304,207 | 2006 | 306,361 | 2005 | 309,249 | 2004 | 312,536 | 2003 | 315,631 | 2002 | 319,557 | 2001 | 325,057 | 2000 | 331,240 | 1999 | 340,597 | 1998 | 354,574 | 1997 | 370,987 | 1996 | 387,941 | 1995 | 405,568 | 1994 | 420,866 | 1993 | 424,253 | 1992 | 416,307 | 1991 | 402,782 | 1990 | 384,036 | 1989 | 367,419 | 1988 | 360,050 | 1987 | 357,103 | 1986 | 352,000 | 1985 | 343,897 | 1984 | 334,246 | 1983 | 323,931 | 1982 | 314,065 | 1981 | 309,956 | 1980 | 313,100 | 1979 | 319,896 | 1978 | 329,447 | 1977 | 342,945 | 1976 | 362,298 | 1975 | 387,134 | 1974 | 415,843 | 1973 | 440,908 | 1972 | 454,617 | 1971 | 457,132 | 1970 | 451,456 | 1969 | 438,116 | 1968 | 424,082 | 1967 | 416,892 | 1966 | 407,587 | 1965 | 392,395 | 1964 | 382,709 | 1963 | 376,522 | 1962 | 370,397 | 1961 | 369,500 | 1960 | 372,614 |
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