Year | Value | 2022 | 229,904 | 2021 | 248,530 | 2020 | 255,119 | 2019 | 261,120 | 2018 | 265,125 | 2017 | 262,741 | 2016 | 257,173 | 2015 | 253,654 | 2014 | 251,451 | 2013 | 251,560 | 2012 | 251,845 | 2011 | 248,795 | 2010 | 244,819 | 2009 | 241,878 | 2008 | 239,809 | 2007 | 242,755 | 2006 | 251,672 | 2005 | 260,895 | 2004 | 266,499 | 2003 | 269,738 | 2002 | 273,745 | 2001 | 281,607 | 2000 | 288,354 | 1999 | 290,839 | 1998 | 293,823 | 1997 | 296,063 | 1996 | 296,237 | 1995 | 296,745 | 1994 | 300,839 | 1993 | 306,285 | 1992 | 312,609 | 1991 | 320,315 | 1990 | 325,032 | 1989 | 325,141 | 1988 | 317,885 | 1987 | 305,301 | 1986 | 292,380 | 1985 | 281,332 | 1984 | 274,031 | 1983 | 269,970 | 1982 | 269,289 | 1981 | 272,051 | 1980 | 278,157 | 1979 | 287,186 | 1978 | 298,115 | 1977 | 307,348 | 1976 | 312,378 | 1975 | 314,699 | 1974 | 314,402 | 1973 | 312,788 | 1972 | 312,702 | 1971 | 314,799 | 1970 | 318,888 | 1969 | 324,280 | 1968 | 328,355 | 1967 | 328,749 | 1966 | 325,705 | 1965 | 318,712 | 1964 | 304,661 | 1963 | 284,090 | 1962 | 261,240 | 1961 | 239,079 | 1960 | 220,752 |
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