| Year | Value | | 2022 | 171,735 | | 2021 | 174,497 | | 2020 | 179,127 | | 2019 | 184,020 | | 2018 | 187,879 | | 2017 | 191,960 | | 2016 | 195,471 | | 2015 | 195,504 | | 2014 | 193,695 | | 2013 | 192,887 | | 2012 | 193,509 | | 2011 | 196,831 | | 2010 | 202,134 | | 2009 | 207,023 | | 2008 | 210,340 | | 2007 | 210,077 | | 2006 | 205,628 | | 2005 | 199,912 | | 2004 | 194,714 | | 2003 | 189,922 | | 2002 | 186,517 | | 2001 | 184,787 | | 2000 | 183,760 | | 1999 | 183,289 | | 1998 | 183,474 | | 1997 | 183,554 | | 1996 | 182,769 | | 1995 | 182,064 | | 1994 | 182,464 | | 1993 | 183,883 | | 1992 | 187,511 | | 1991 | 193,652 | | 1990 | 199,489 | | 1989 | 203,524 | | 1988 | 204,705 | | 1987 | 201,128 | | 1986 | 192,298 | | 1985 | 181,011 | | 1984 | 170,316 | | 1983 | 161,392 | | 1982 | 154,708 | | 1981 | 150,446 | | 1980 | 147,726 | | 1979 | 145,256 | | 1978 | 142,678 | | 1977 | 140,306 | | 1976 | 138,872 | | 1975 | 138,490 | | 1974 | 138,539 | | 1973 | 139,163 | | 1972 | 140,259 | | 1971 | 141,595 | | 1970 | 143,265 | | 1969 | 145,553 | | 1968 | 148,548 | | 1967 | 150,805 | | 1966 | 153,473 | | 1965 | 157,180 | | 1964 | 158,285 | | 1963 | 157,227 | | 1962 | 156,552 | | 1961 | 154,683 | | 1960 | 151,324 |
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