Year current US$ 1970 165000000 1971 182583333.33333334 1972 259000000.00000003 1973 257999999.99999997 1974 306400000 1975 553900000 1976 524399999.99999994 1977 618600000 1978 928549999.9999999 1979 939599999.9999999 1980 740434734.875732 1981 927507861.703052 1982 875004724.5582438 1983 716718769.9908923 1984 1213601238.8227422 1985 1046649569.2285304 1986 536849813.41416407 1987 587323797.8734797 1988 642781911.0454923 1989 546466130.8013908 1990 610002370.2494224 1991 832361096.2160617 1992 942770791.6668483 1993 949882733.8178414 1994 859573203.6047047 1995 1023659460.0968015 1996 1201058997.2198858 1997 1555978199.0149703 1998 2005962070.2440395 1999 1555260040.2449381 2000 1523663120.586874 2001 1161667007.4711094 2002 1288172984.6582985 2003 1069468964.444828 2004 966983807.9637097 2005 1361095848.259039 2006 1587836213.3387058 2007 1992505519.8251998 2008 2926792373.535244 2009 2942815327.635328 2010 3341832140.5305395 2011 4748433464.101432 2012 4786641070.911722 2013 5830709334.298119 2014 6940351215.629522 2015 6692861577.424023 2016 7147105759.768452 2017 8334527684.515195 2018 8297786005.788712 2019 8127949869.75398 2020 5779504196.816208 2021 6784486801.736613 2022 7312797380.607815