Year | Value | 2022 | 340,660 | 2021 | 331,317 | 2020 | 329,889 | 2019 | 319,729 | 2018 | 312,842 | 2017 | 315,333 | 2016 | 325,043 | 2015 | 338,014 | 2014 | 352,823 | 2013 | 366,162 | 2012 | 376,041 | 2011 | 383,493 | 2010 | 389,025 | 2009 | 392,278 | 2008 | 394,332 | 2007 | 397,107 | 2006 | 399,545 | 2005 | 395,005 | 2004 | 386,188 | 2003 | 377,594 | 2002 | 361,800 | 2001 | 340,831 | 2000 | 325,414 | 1999 | 312,207 | 1998 | 294,774 | 1997 | 279,032 | 1996 | 267,466 | 1995 | 258,609 | 1994 | 254,148 | 1993 | 255,002 | 1992 | 260,376 | 1991 | 269,150 | 1990 | 280,502 | 1989 | 290,780 | 1988 | 298,230 | 1987 | 303,975 | 1986 | 308,177 | 1985 | 311,646 | 1984 | 316,341 | 1983 | 323,168 | 1982 | 330,760 | 1981 | 336,671 | 1980 | 339,763 | 1979 | 331,584 | 1978 | 303,895 | 1977 | 265,924 | 1976 | 229,469 | 1975 | 204,150 | 1974 | 202,598 | 1973 | 227,426 | 1972 | 263,853 | 1971 | 299,225 | 1970 | 329,042 | 1969 | 345,084 | 1968 | 348,708 | 1967 | 349,108 | 1966 | 348,498 | 1965 | 344,870 | 1964 | 338,927 | 1963 | 333,827 | 1962 | 330,110 | 1961 | 326,596 | 1960 | 325,709 |
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