Year | Value | 2022 | 308,375 | 2021 | 297,724 | 2020 | 302,671 | 2019 | 304,327 | 2018 | 303,095 | 2017 | 301,276 | 2016 | 299,514 | 2015 | 298,271 | 2014 | 297,578 | 2013 | 297,968 | 2012 | 300,143 | 2011 | 319,430 | 2010 | 339,774 | 2009 | 349,571 | 2008 | 362,800 | 2007 | 377,961 | 2006 | 393,258 | 2005 | 407,536 | 2004 | 418,514 | 2003 | 418,022 | 2002 | 408,002 | 2001 | 393,825 | 2000 | 377,097 | 1999 | 361,373 | 1998 | 353,516 | 1997 | 351,643 | 1996 | 346,921 | 1995 | 338,492 | 1994 | 328,099 | 1993 | 316,926 | 1992 | 306,169 | 1991 | 301,178 | 1990 | 303,807 | 1989 | 313,487 | 1988 | 326,199 | 1987 | 339,755 | 1986 | 358,752 | 1985 | 382,947 | 1984 | 410,877 | 1983 | 435,258 | 1982 | 448,095 | 1981 | 450,076 | 1980 | 444,104 | 1979 | 431,326 | 1978 | 418,381 | 1977 | 411,609 | 1976 | 402,328 | 1975 | 386,952 | 1974 | 377,036 | 1973 | 370,653 | 1972 | 364,451 | 1971 | 363,422 | 1970 | 366,322 | 1969 | 364,139 | 1968 | 358,679 | 1967 | 354,751 | 1966 | 351,238 | 1965 | 349,018 | 1964 | 348,021 | 1963 | 349,679 | 1962 | 353,257 | 1961 | 357,825 | 1960 | 363,809 |
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