Year constant 2010 US$ 1970 17131.6870302328 1971 17550.0529661301 1972 18300.8773483968 1973 19251.2161060933 1974 19232.4692187244 1975 19012.3101914257 1976 19729.3942438119 1977 20264.2620633861 1978 20950.8862584673 1979 21616.5547944495 1980 21711.9301062209 1981 21919.6731010369 1982 21772.9521023662 1983 22225.7745868306 1984 23066.4413223174 1985 23742.1085216373 1986 24250.1190761487 1987 24933.4290010919 1988 25912.3285858749 1989 26689.1203737283 1990 27270.8707016 1991 27408.6377987544 1992 27724.5218898567 1993 27829.6118831183 1994 28402.5192546069 1995 28939.3238419548 1996 29639.085544991 1997 30456.7201943357 1998 31075.6217956727 1999 31884.4754862258 2000 32971.3948717972 2001 33184.8207888331 2002 33430.1150256387 2003 33906.7932178721 2004 34802.4756364637 2005 35531.7696110504 2006 36341.7324903818 2007 36976.0298104858 2008 36730.7781853133 2009 35287.2752017073 2010 36176.1010514249 2011 36665.8833517931 2012 36895.1985653089 2013 37212.0393699191 2014 37715.5517207506 2015 38338.9821988552 2016 38724.5198451306 2017 39500.8757285706