Year constant 2010 US$ 1960 8749.11634309086 1961 9413.29793330322 1962 9880.92971961716 1963 10542.3692831883 1964 10937.7647708192 1965 11522.7437797807 1966 11224.5230058403 1967 11072.1601453727 1968 12604.1778315183 1969 13945.8488360283 1970 13901.6646337283 1971 14946.5989567383 1972 16341.4459610107 1973 16570.2329922164 1974 17126.1163079909 1975 17282.3085529991 1976 16955.2629228498 1977 16751.4859142264 1978 17313.0706239367 1979 17921.5816166884 1980 17788.6851971689 1981 18369.1213932404 1982 18402.7686429918 1983 18678.0497739239 1984 18607.5789714609 1985 19020.3320322238 1986 19513.0680064405 1987 20571.2854476862 1988 20822.0060185731 1989 20589.4072269337 1990 21422.2650895618 1991 21729.7560379135 1992 22620.5194369983 1993 22933.9709155289 1994 24007.7299105443 1995 24919.0794135841 1996 25544.339665245 1997 25893.6850625967 1998 26235.7428355135 1999 26390.5585125029 2000 27686.4403352535 2001 27057.5492569368 2002 26521.3776722743 2003 26290.6242727737 2004 26926.2341579441 2005 27500.1592072409 2006 28532.0328493777 2007 29645.9578663767 2008 29961.4443192408 2009 29594.4109274656 2010 30659.1277511137 2011 31593.0441204215 2012 31671.480002502 2013 32374.3342702397 2014 32996.7469567795 2015 33179.9434554644 2016 33839.8348481301 2017 34333.3619004441 2018 34788.6579293065