Year current US$ 1970 107797999.374555 1971 112748556.927501 1972 97488703.135307 1973 105927660.483019 1974 132260142.371893 1975 155790640.096374 1976 168266640.203143 1977 194994299.369244 1978 218072060.140131 1979 244939574.034261 1980 261330375.35115 1981 249232122.946191 2002 346155362.11051 2003 414628368.304446 2004 494199535.024783 2005 534220721.194027 2006 586655830.493086 2007 808520477.376337 2008 875519867.785475 2009 1007275126.47066 2010 1315124428.19327 2011 1469911062.42629 2012 1646490068.66479 2013 1677066930.31799 2014 1597595017.26609 2015 1547802525.15607 2016 1307011845.74819 2017 1325949720.59984 2018 1392398550.36158 2019 1401991493.82822 2020 1697020690.56449 2021 1239762312.72959