Year constant 2010 US$ 1968 92772134.5230572 1969 105843746.468347 1970 122546361.706864 1971 142698430.029109 1972 154680740.941595 1973 167207702.370482 1974 175014359.473338 1975 212776793.969498 1976 262703089.475551 1977 293385067.370573 1978 322614644.037977 1979 378713645.209769 1980 3836881197.17007 1981 4061640302.05205 1982 4111385047.3486 1983 4147876630.60246 1984 4099765836.74302 1985 4577061221.83469 1986 4527861126.94244 1987 6174158027.51195 1988 4794739870.22762 1989 4837948809.66362 1990 2568027090.68011 1991 977647641.072898 1992 998525910.121043 1993 2402271789.53725 1994 2499219577.98203 1995 2908252100.77991 1996 3036063417.21712 1997 3102147677.44529 1998 3145356616.88129 1999 3322731128.51764 2000 3174041543.03229 2001 3466518859.57956 2002 3159699079.95679 2003 2258302508.37793 2004 1754863899.50778 2005 1735619582.00884 2006 1917895948.06863 2007 2037719057.30557 2008 2174246206.57064 2009 2956730325.47271 2010 3144200512.82051 2011 3217558402.47043 2012 3285127124.55076 2013 2913354214.86987 2014 2266589633.54638 2015 1684076057.37217 2016 1783436544.70501