Year | Value | 2022 | 431,945 | 2021 | 430,953 | 2020 | 438,738 | 2019 | 443,631 | 2018 | 442,988 | 2017 | 436,374 | 2016 | 424,210 | 2015 | 408,515 | 2014 | 391,474 | 2013 | 374,357 | 2012 | 358,751 | 2011 | 345,962 | 2010 | 335,249 | 2009 | 325,112 | 2008 | 312,967 | 2007 | 299,798 | 2006 | 283,446 | 2005 | 259,374 | 2004 | 229,785 | 2003 | 201,279 | 2002 | 182,162 | 2001 | 179,618 | 2000 | 196,051 | 1999 | 227,212 | 1998 | 266,195 | 1997 | 303,898 | 1996 | 328,844 | 1995 | 336,486 | 1994 | 330,230 | 1993 | 311,679 | 1992 | 287,204 | 1991 | 267,882 | 1990 | 258,267 | 1989 | 260,645 | 1988 | 278,536 | 1987 | 294,137 | 1986 | 309,263 | 1985 | 310,626 | 1984 | 295,440 | 1983 | 270,111 | 1982 | 238,357 | 1981 | 206,584 | 1980 | 180,189 | 1979 | 160,702 | 1978 | 147,605 | 1977 | 141,240 | 1976 | 138,493 | 1975 | 138,101 | 1974 | 140,790 | 1973 | 146,859 | 1972 | 154,831 | 1971 | 162,232 | 1970 | 167,147 | 1969 | 168,775 | 1968 | 167,027 | 1967 | 162,699 | 1966 | 157,786 | 1965 | 153,172 | 1964 | 148,483 | 1963 | 143,498 | 1962 | 138,483 | 1961 | 133,508 | 1960 | 128,554 |
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