Year | Value | 2022 | 298,589 | 2021 | 303,745 | 2020 | 308,365 | 2019 | 314,230 | 2018 | 316,978 | 2017 | 317,524 | 2016 | 319,857 | 2015 | 320,358 | 2014 | 319,362 | 2013 | 318,496 | 2012 | 317,844 | 2011 | 318,038 | 2010 | 319,656 | 2009 | 321,516 | 2008 | 322,814 | 2007 | 323,328 | 2006 | 322,253 | 2005 | 319,432 | 2004 | 315,209 | 2003 | 309,728 | 2002 | 303,666 | 2001 | 297,923 | 2000 | 293,342 | 1999 | 290,649 | 1998 | 289,539 | 1997 | 289,608 | 1996 | 290,413 | 1995 | 290,987 | 1994 | 291,001 | 1993 | 291,042 | 1992 | 291,444 | 1991 | 292,634 | 1990 | 295,315 | 1989 | 299,157 | 1988 | 302,708 | 1987 | 305,128 | 1986 | 306,367 | 1985 | 306,632 | 1984 | 304,868 | 1983 | 300,708 | 1982 | 294,644 | 1981 | 286,395 | 1980 | 276,716 | 1979 | 267,878 | 1978 | 259,726 | 1977 | 250,975 | 1976 | 242,333 | 1975 | 233,491 | 1974 | 223,648 | 1973 | 214,045 | 1972 | 205,996 | 1971 | 198,658 | 1970 | 192,033 | 1969 | 187,403 | 1968 | 184,144 | 1967 | 181,002 | 1966 | 178,024 | 1965 | 175,207 | 1964 | 172,520 | 1963 | 169,820 | 1962 | 167,174 | 1961 | 164,984 | 1960 | 163,131 |
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