Year | Value | 2022 | 248,221 | 2021 | 254,840 | 2020 | 262,847 | 2019 | 269,753 | 2018 | 276,517 | 2017 | 282,433 | 2016 | 285,954 | 2015 | 283,607 | 2014 | 278,618 | 2013 | 275,343 | 2012 | 271,201 | 2011 | 266,530 | 2010 | 263,887 | 2009 | 263,118 | 2008 | 262,528 | 2007 | 263,009 | 2006 | 265,149 | 2005 | 265,367 | 2004 | 261,475 | 2003 | 255,609 | 2002 | 248,456 | 2001 | 241,351 | 2000 | 237,831 | 1999 | 238,707 | 1998 | 242,840 | 1997 | 250,682 | 1996 | 262,153 | 1995 | 274,709 | 1994 | 288,491 | 1993 | 303,653 | 1992 | 315,733 | 1991 | 322,782 | 1990 | 327,451 | 1989 | 330,618 | 1988 | 332,681 | 1987 | 334,948 | 1986 | 336,781 | 1985 | 335,673 | 1984 | 331,004 | 1983 | 323,781 | 1982 | 316,326 | 1981 | 307,294 | 1980 | 296,474 | 1979 | 286,736 | 1978 | 278,512 | 1977 | 270,610 | 1976 | 262,715 | 1975 | 259,867 | 1974 | 262,952 | 1973 | 266,092 | 1972 | 268,609 | 1971 | 268,342 | 1970 | 259,753 | 1969 | 253,284 | 1968 | 253,246 | 1967 | 250,828 | 1966 | 255,088 | 1965 | 275,459 | 1964 | 295,830 | 1963 | 298,413 | 1962 | 288,333 | 1961 | 271,526 | 1960 | 246,065 |
|