Year | Value | 2022 | 329,744 | 2021 | 320,939 | 2020 | 311,118 | 2019 | 301,043 | 2018 | 293,069 | 2017 | 288,895 | 2016 | 286,951 | 2015 | 286,356 | 2014 | 285,815 | 2013 | 285,391 | 2012 | 285,294 | 2011 | 284,721 | 2010 | 285,422 | 2009 | 289,039 | 2008 | 294,790 | 2007 | 301,547 | 2006 | 309,250 | 2005 | 316,303 | 2004 | 320,393 | 2003 | 319,588 | 2002 | 312,794 | 2001 | 299,855 | 2000 | 282,962 | 1999 | 266,373 | 1998 | 251,747 | 1997 | 239,790 | 1996 | 232,151 | 1995 | 227,175 | 1994 | 221,118 | 1993 | 214,826 | 1992 | 211,498 | 1991 | 210,737 | 1990 | 211,921 | 1989 | 214,173 | 1988 | 217,339 | 1987 | 220,499 | 1986 | 222,909 | 1985 | 226,205 | 1984 | 230,690 | 1983 | 235,664 | 1982 | 241,237 | 1981 | 248,930 | 1980 | 258,575 | 1979 | 263,393 | 1978 | 262,204 | 1977 | 260,439 | 1976 | 256,344 | 1975 | 248,542 | 1974 | 245,495 | 1973 | 248,807 | 1972 | 252,133 | 1971 | 255,019 | 1970 | 256,631 | 1969 | 257,036 | 1968 | 257,220 | 1967 | 256,653 | 1966 | 254,921 | 1965 | 252,472 | 1964 | 248,476 | 1963 | 243,614 | 1962 | 239,734 | 1961 | 236,541 | 1960 | 233,610 |
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