Year | Value | 2022 | 342,221 | 2021 | 344,274 | 2020 | 334,648 | 2019 | 321,970 | 2018 | 308,136 | 2017 | 295,237 | 2016 | 288,098 | 2015 | 288,051 | 2014 | 290,817 | 2013 | 296,240 | 2012 | 305,787 | 2011 | 315,979 | 2010 | 328,877 | 2009 | 350,509 | 2008 | 369,939 | 2007 | 379,284 | 2006 | 379,249 | 2005 | 373,668 | 2004 | 362,870 | 2003 | 351,094 | 2002 | 345,957 | 2001 | 339,861 | 2000 | 327,139 | 1999 | 317,277 | 1998 | 311,773 | 1997 | 306,705 | 1996 | 304,668 | 1995 | 306,201 | 1994 | 303,344 | 1993 | 296,376 | 1992 | 290,292 | 1991 | 284,185 | 1990 | 279,602 | 1989 | 281,300 | 1988 | 287,409 | 1987 | 292,884 | 1986 | 299,756 | 1985 | 308,031 | 1984 | 315,520 | 1983 | 320,526 | 1982 | 323,817 | 1981 | 326,975 | 1980 | 329,715 | 1979 | 330,277 | 1978 | 331,461 | 1977 | 334,226 | 1976 | 336,276 | 1975 | 334,645 | 1974 | 329,371 | 1973 | 308,471 | 1972 | 273,470 | 1971 | 239,368 | 1970 | 212,054 | 1969 | 204,112 | 1968 | 222,790 | 1967 | 256,479 | 1966 | 289,515 | 1965 | 315,998 | 1964 | 327,365 | 1963 | 327,556 | 1962 | 324,469 | 1961 | 319,545 | 1960 | 313,060 |
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