Year | Value | 2022 | 261,392 | 2021 | 269,586 | 2020 | 265,463 | 2019 | 262,396 | 2018 | 261,669 | 2017 | 260,624 | 2016 | 255,775 | 2015 | 249,220 | 2014 | 243,050 | 2013 | 238,317 | 2012 | 239,153 | 2011 | 246,408 | 2010 | 254,324 | 2009 | 258,200 | 2008 | 258,977 | 2007 | 260,688 | 2006 | 262,818 | 2005 | 264,531 | 2004 | 266,845 | 2003 | 270,051 | 2002 | 272,234 | 2001 | 275,904 | 2000 | 279,159 | 1999 | 280,446 | 1998 | 282,954 | 1997 | 285,708 | 1996 | 288,545 | 1995 | 288,955 | 1994 | 284,205 | 1993 | 275,076 | 1992 | 265,889 | 1991 | 257,574 | 1990 | 250,410 | 1989 | 248,777 | 1988 | 249,326 | 1987 | 250,081 | 1986 | 253,927 | 1985 | 261,556 | 1984 | 272,322 | 1983 | 283,481 | 1982 | 292,965 | 1981 | 299,502 | 1980 | 302,796 | 1979 | 303,123 | 1978 | 302,922 | 1977 | 303,427 | 1976 | 304,502 | 1975 | 307,546 | 1974 | 311,412 | 1973 | 313,452 | 1972 | 312,475 | 1971 | 308,447 | 1970 | 300,618 | 1969 | 286,157 | 1968 | 265,437 | 1967 | 242,773 | 1966 | 221,608 | 1965 | 204,948 | 1964 | 197,613 | 1963 | 200,461 | 1962 | 208,049 | 1961 | 216,708 | 1960 | 225,447 |
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