Year constant 2010 US$ 1970 9462.50876110729 1971 9692.58932695619 1972 10075.2822389733 1973 10541.5595982665 1974 10389.0781314228 1975 10279.590369293 1976 10629.757861661 1977 10804.5850004643 1978 11170.8807961162 1979 11412.3582329966 1980 11321.7993603366 1981 11132.2271665577 1982 11157.5629838395 1983 11293.9280569531 1984 11516.9753977152 1985 11752.076326002 1986 12260.112470977 1987 12587.8650387857 1988 13048.7869997479 1989 13375.5346439708 1990 13723.1366891569 1991 13879.0638766956 1992 14045.2754954285 1993 13817.1539498152 1994 14008.8278407515 1995 14337.8636572506 1996 14719.300898667 1997 15208.5360158223 1998 15727.4899222306 1999 16231.1688787091 2000 16835.2678636961 2001 17097.109909196 2002 17360.6231271204 2003 17699.1769378425 2004 18359.8532320307 2005 18843.5013261152 2006 19492.676303915 2007 20164.1860127883 2008 19999.6906879334 2009 18937.8811837161 2010 19487.7023150076 2011 19846.6059090017 2012 19777.5350927776 2013 19872.3678016598 2014 20176.9212123796 2015 20544.3922830839 2016 20825.1330650324 2017 21276.6069324077