Year | Value | 2022 | 317,235 | 2021 | 315,527 | 2020 | 313,204 | 2019 | 309,613 | 2018 | 305,361 | 2017 | 300,738 | 2016 | 295,177 | 2015 | 288,681 | 2014 | 283,269 | 2013 | 279,799 | 2012 | 278,009 | 2011 | 278,968 | 2010 | 283,354 | 2009 | 288,713 | 2008 | 292,159 | 2007 | 295,234 | 2006 | 299,822 | 2005 | 306,145 | 2004 | 312,378 | 2003 | 316,627 | 2002 | 317,309 | 2001 | 314,686 | 2000 | 310,529 | 1999 | 304,845 | 1998 | 298,574 | 1997 | 293,528 | 1996 | 289,256 | 1995 | 284,470 | 1994 | 278,592 | 1993 | 272,029 | 1992 | 265,625 | 1991 | 259,021 | 1990 | 253,578 | 1989 | 251,399 | 1988 | 251,589 | 1987 | 253,023 | 1986 | 255,500 | 1985 | 257,486 | 1984 | 258,027 | 1983 | 257,358 | 1982 | 254,565 | 1981 | 248,873 | 1980 | 240,722 | 1979 | 232,168 | 1978 | 224,381 | 1977 | 218,062 | 1976 | 215,181 | 1975 | 215,949 | 1974 | 215,774 | 1973 | 213,926 | 1972 | 212,571 | 1971 | 210,747 | 1970 | 207,329 | 1969 | 202,711 | 1968 | 198,240 | 1967 | 193,921 | 1966 | 190,077 | 1965 | 186,741 | 1964 | 183,726 | 1963 | 181,449 | 1962 | 179,041 | 1961 | 176,659 | 1960 | 176,370 |
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