Year | Value | 2022 | 342,343 | 2021 | 335,854 | 2020 | 330,960 | 2019 | 325,562 | 2018 | 318,931 | 2017 | 312,908 | 2016 | 310,086 | 2015 | 309,009 | 2014 | 308,162 | 2013 | 307,166 | 2012 | 305,899 | 2011 | 304,319 | 2010 | 303,278 | 2009 | 304,296 | 2008 | 311,297 | 2007 | 325,499 | 2006 | 342,919 | 2005 | 361,135 | 2004 | 377,833 | 2003 | 389,425 | 2002 | 394,935 | 2001 | 395,612 | 2000 | 393,079 | 1999 | 388,708 | 1998 | 381,928 | 1997 | 372,683 | 1996 | 362,462 | 1995 | 352,016 | 1994 | 344,046 | 1993 | 338,243 | 1992 | 330,033 | 1991 | 316,978 | 1990 | 297,327 | 1989 | 270,645 | 1988 | 243,155 | 1987 | 224,053 | 1986 | 219,289 | 1985 | 230,949 | 1984 | 254,007 | 1983 | 282,470 | 1982 | 309,437 | 1981 | 327,793 | 1980 | 335,034 | 1979 | 333,286 | 1978 | 326,298 | 1977 | 319,312 | 1976 | 316,710 | 1975 | 320,179 | 1974 | 328,022 | 1973 | 335,193 | 1972 | 336,844 | 1971 | 330,235 | 1970 | 315,444 | 1969 | 294,734 | 1968 | 271,044 | 1967 | 246,808 | 1966 | 223,501 | 1965 | 202,012 | 1964 | 182,442 | 1963 | 164,597 | 1962 | 149,319 | 1961 | 138,010 | 1960 | 131,622 |
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