Year | Value | 2022 | 268,899 | 2021 | 268,485 | 2020 | 275,793 | 2019 | 275,065 | 2018 | 271,946 | 2017 | 269,245 | 2016 | 267,850 | 2015 | 269,383 | 2014 | 273,845 | 2013 | 280,121 | 2012 | 286,141 | 2011 | 288,117 | 2010 | 282,831 | 2009 | 271,596 | 2008 | 257,949 | 2007 | 244,098 | 2006 | 233,947 | 2005 | 226,825 | 2004 | 221,439 | 2003 | 218,449 | 2002 | 216,798 | 2001 | 216,516 | 2000 | 219,255 | 1999 | 225,870 | 1998 | 237,302 | 1997 | 251,914 | 1996 | 268,277 | 1995 | 285,384 | 1994 | 298,723 | 1993 | 306,229 | 1992 | 310,578 | 1991 | 313,497 | 1990 | 316,785 | 1989 | 321,118 | 1988 | 324,138 | 1987 | 327,784 | 1986 | 333,109 | 1985 | 340,123 | 1984 | 352,444 | 1983 | 370,263 | 1982 | 389,631 | 1981 | 409,662 | 1980 | 429,743 | 1979 | 444,562 | 1978 | 449,883 | 1977 | 445,524 | 1976 | 432,998 | 1975 | 414,094 | 1974 | 390,451 | 1973 | 367,324 | 1972 | 350,383 | 1971 | 340,054 | 1970 | 338,072 | 1969 | 342,494 | 1968 | 347,631 | 1967 | 349,328 | 1966 | 345,920 | 1965 | 339,040 | 1964 | 328,948 | 1963 | 321,131 | 1962 | 324,358 | 1961 | 336,788 | 1960 | 353,854 |
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