Year current US$ 1970 125931132.280231 1971 113948480.354015 1972 135602606.784803 1973 219888734.837927 1974 253808538.58341 1975 335039293.758924 1976 314910778.345535 1977 554336118.429149 1978 595143493.962255 1979 587071165.977269 1980 726718619.184588 1981 644905176.496689 1982 910806648.524396 1983 624532361.202496 1984 576589688.750383 1985 446920111.384974 1986 708291183.884923 1987 703731327.039651 1988 786353424.115979 1989 824624794.113434 1990 1063461376.11598 1991 1088413645.75948 1992 1166070095.02509 1993 1042247914.97831 1994 1275032699.43069 1995 1925681613.07073 1996 1950896745.52534 1997 1840079904.69125 1998 1938299955.8962 1999 1244015534.48552 2000 1254307895.91531 2001 1233766354.39371 2002 1508943352.78153 2003 2479581012.69866 2004 2218422537.56761 2005 2339985631.91295 2006 2367120544.11872 2007 3479524035.6713 2008 4208743100.20132 2009 4301277343.47345 2010 3824768179.6676 2011 4402806803.85986 2012 5111407532.63166 2013 5351111439.05132 2014 5936667000.24712 2015 6246447166.73359 2016 6611404212.48215 2017 6502807015.70054 2018 4538164759.87287 2019 4393392938.23385 2020 4839911600.35847 2021 5183414415.85061