Year | Value | 2022 | 310,104 | 2021 | 304,608 | 2020 | 298,753 | 2019 | 294,710 | 2018 | 293,260 | 2017 | 293,526 | 2016 | 295,829 | 2015 | 299,376 | 2014 | 302,922 | 2013 | 306,807 | 2012 | 311,174 | 2011 | 315,696 | 2010 | 320,860 | 2009 | 325,959 | 2008 | 327,617 | 2007 | 325,693 | 2006 | 321,906 | 2005 | 316,482 | 2004 | 309,064 | 2003 | 300,634 | 2002 | 292,864 | 2001 | 286,284 | 2000 | 280,412 | 1999 | 274,584 | 1998 | 268,909 | 1997 | 264,011 | 1996 | 259,602 | 1995 | 256,532 | 1994 | 255,391 | 1993 | 255,716 | 1992 | 256,985 | 1991 | 258,920 | 1990 | 259,819 | 1989 | 258,946 | 1988 | 256,955 | 1987 | 253,201 | 1986 | 247,386 | 1985 | 239,300 | 1984 | 230,525 | 1983 | 222,149 | 1982 | 214,146 | 1981 | 207,918 | 1980 | 204,945 | 1979 | 203,643 | 1978 | 202,660 | 1977 | 202,477 | 1976 | 202,634 | 1975 | 202,523 | 1974 | 200,792 | 1973 | 197,806 | 1972 | 195,237 | 1971 | 193,113 | 1970 | 189,514 | 1969 | 185,493 | 1968 | 183,478 | 1967 | 182,034 | 1966 | 181,269 | 1965 | 181,568 | 1964 | 179,298 | 1963 | 173,156 | 1962 | 166,040 | 1961 | 158,992 | 1960 | 153,521 |
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