Year | Value | 2022 | 305,260 | 2021 | 304,228 | 2020 | 303,537 | 2019 | 300,140 | 2018 | 294,517 | 2017 | 287,512 | 2016 | 279,606 | 2015 | 273,693 | 2014 | 272,275 | 2013 | 274,657 | 2012 | 279,907 | 2011 | 288,121 | 2010 | 297,281 | 2009 | 307,610 | 2008 | 319,502 | 2007 | 330,038 | 2006 | 337,982 | 2005 | 343,990 | 2004 | 347,567 | 2003 | 348,984 | 2002 | 349,118 | 2001 | 347,280 | 2000 | 343,183 | 1999 | 336,783 | 1998 | 328,165 | 1997 | 319,130 | 1996 | 310,986 | 1995 | 302,781 | 1994 | 293,820 | 1993 | 284,211 | 1992 | 273,843 | 1991 | 262,513 | 1990 | 253,823 | 1989 | 250,146 | 1988 | 250,773 | 1987 | 254,881 | 1986 | 256,047 | 1985 | 249,027 | 1984 | 243,281 | 1983 | 241,637 | 1982 | 238,121 | 1981 | 242,321 | 1980 | 260,477 | 1979 | 277,602 | 1978 | 278,880 | 1977 | 269,161 | 1976 | 253,132 | 1975 | 231,256 | 1974 | 209,154 | 1973 | 197,635 | 1972 | 198,359 | 1971 | 202,584 | 1970 | 208,415 | 1969 | 214,678 | 1968 | 220,443 | 1967 | 225,188 | 1966 | 229,976 | 1965 | 237,078 | 1964 | 246,554 | 1963 | 257,712 | 1962 | 269,508 | 1961 | 279,863 | 1960 | 285,724 |
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