Year | Value | 2022 | 317,875 | 2021 | 339,125 | 2020 | 362,910 | 2019 | 382,725 | 2018 | 395,779 | 2017 | 403,047 | 2016 | 408,243 | 2015 | 411,111 | 2014 | 411,848 | 2013 | 413,204 | 2012 | 416,032 | 2011 | 419,270 | 2010 | 422,779 | 2009 | 427,009 | 2008 | 432,141 | 2007 | 438,601 | 2006 | 443,511 | 2005 | 444,153 | 2004 | 441,850 | 2003 | 437,008 | 2002 | 429,078 | 2001 | 419,377 | 2000 | 408,938 | 1999 | 399,689 | 1998 | 392,122 | 1997 | 385,636 | 1996 | 381,245 | 1995 | 378,350 | 1994 | 373,981 | 1993 | 367,176 | 1992 | 358,764 | 1991 | 348,888 | 1990 | 337,913 | 1989 | 330,619 | 1988 | 328,588 | 1987 | 328,661 | 1986 | 329,915 | 1985 | 331,071 | 1984 | 328,823 | 1983 | 322,216 | 1982 | 313,280 | 1981 | 303,810 | 1980 | 295,459 | 1979 | 290,962 | 1978 | 290,790 | 1977 | 294,894 | 1976 | 301,445 | 1975 | 307,258 | 1974 | 313,513 | 1973 | 319,955 | 1972 | 324,510 | 1971 | 327,377 | 1970 | 330,753 | 1969 | 334,742 | 1968 | 337,393 | 1967 | 336,825 | 1966 | 332,162 | 1965 | 323,415 | 1964 | 311,193 | 1963 | 296,073 | 1962 | 279,460 | 1961 | 262,556 | 1960 | 247,180 |
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