Year | Value | 2022 | 337,464 | 2021 | 329,284 | 2020 | 323,441 | 2019 | 318,776 | 2018 | 315,793 | 2017 | 314,701 | 2016 | 315,345 | 2015 | 312,154 | 2014 | 304,102 | 2013 | 294,800 | 2012 | 280,889 | 2011 | 261,941 | 2010 | 246,622 | 2009 | 241,936 | 2008 | 241,559 | 2007 | 244,941 | 2006 | 252,057 | 2005 | 258,280 | 2004 | 260,424 | 2003 | 260,729 | 2002 | 263,258 | 2001 | 268,840 | 2000 | 275,471 | 1999 | 280,404 | 1998 | 282,943 | 1997 | 283,242 | 1996 | 281,556 | 1995 | 280,190 | 1994 | 280,296 | 1993 | 281,850 | 1992 | 283,355 | 1991 | 284,581 | 1990 | 285,225 | 1989 | 278,962 | 1988 | 259,725 | 1987 | 234,682 | 1986 | 211,413 | 1985 | 192,714 | 1984 | 188,595 | 1983 | 202,515 | 1982 | 223,896 | 1981 | 243,159 | 1980 | 256,504 | 1979 | 261,653 | 1978 | 262,493 | 1977 | 263,471 | 1976 | 265,070 | 1975 | 266,620 | 1974 | 267,441 | 1973 | 267,724 | 1972 | 267,488 | 1971 | 267,955 | 1970 | 268,569 | 1969 | 267,805 | 1968 | 265,217 | 1967 | 261,704 | 1966 | 257,450 | 1965 | 252,483 | 1964 | 246,717 | 1963 | 241,782 | 1962 | 236,910 | 1961 | 231,265 | 1960 | 226,078 |
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