Year constant 2010 US$ 1960 10331.7869584434 1961 10352.5712878544 1962 10356.3405607169 1963 10713.7051854277 1964 11245.3045218422 1965 11578.647960904 1966 11649.7229523835 1967 12092.0874691728 1968 12470.2903302567 1969 12862.0370200251 1970 13381.5018914733 1971 13438.6868550637 1972 13669.7882683349 1973 14090.9711838668 1974 14601.3400108611 1975 15126.0533322366 1976 15088.3179089306 1977 15714.0762505677 1978 15839.7852946136 1979 15901.9508119346 1980 15989.860820838 1981 16247.8753173384 1982 16871.0251035205 1983 17062.9194253141 1984 17047.6622606137 1985 16965.8237817084 1986 17552.7318905759 1987 17637.0699180759 1988 17902.0117874474 1989 18417.1762112217 1990 18928.3762278372 1991 18869.3760259796 1992 19076.9011786002 1993 19244.1779045039 1994 19450.6961571924 1995 20067.4706653552 1996 20479.7568412677 1997 20853.7771917195 1998 21658.9580242408 1999 22640.1814229398 2000 23324.4067301719 2001 23743.8591470484 2002 24182.4289181996 2003 24848.8140898412 2004 25800.1089197527 2005 26619.0626054364 2006 27080.7647167771 2007 28376.5340822635 2008 29180.8318244557 2009 28748.5488302291 2010 29225.696736594 2011 29971.0211580225 2012 30327.9731288001 2013 30337.8543197148 2014 30617.5673656827 2015 30888.298157751 2016 31246.7647553411 2017 31449.9045258981 2018 31843.4376105072