Year constant 2010 US$ 1960 11720.4817739539 1961 12107.6725264628 1962 12666.1559847375 1963 13176.7484780929 1964 13869.5297433885 1965 14478.1735554628 1966 15201.8722406988 1967 15743.0876522737 1968 16559.8914900804 1969 17334.631675174 1970 17589.9985622721 1971 18071.3623516945 1972 18872.3429524989 1973 19874.4793319678 1974 19882.2429294412 1975 19725.2179232814 1976 20520.9358121122 1977 21137.2942095316 1978 21883.1224487476 1979 22572.2498499519 1980 22699.3475415439 1981 22989.7758403128 1982 22933.571493011 1983 23500.9623558824 1984 24467.370002851 1985 25254.1996389934 1986 25906.0849535958 1987 26668.680764034 1988 27774.659220601 1989 28665.9298502841 1990 29293.0881443803 1991 29452.2169154876 1992 29777.2179582222 1993 29867.3896771871 1994 30574.1140489635 1995 31226.6832903345 1996 31940.5173804988 1997 32812.9329481627 1998 33519.7180687654 1999 34470.0404047102 2000 35648.7856097593 2001 36022.8573309919 2002 36391.7108563271 2003 36919.7661651811 2004 37868.8041034993 2005 38689.3435517714 2006 39601.3397184389 2007 40368.1726715134 2008 40217.6754137696 2009 38614.1340150055 2010 39509.7953033969 2011 40017.6536020406 2012 40301.2905499025 2013 40659.857972091 2014 41237.958128393 2015 41918.6465570961 2016 42409.0549407135 2017 43211.9379481912 2018 43971.4285781187