Year current US$ 1990 3316909057.689015 1991 4938792989.214923 1992 6887726438.734463 1993 9132636957.320715 1994 10107442752.21713 1995 12034505270.136917 1996 12764714718.722158 1997 13667424488.470284 1998 14158397817.60427 1999 14419263531.240631 2000 14512769485.903814 2001 14814593698.175787 2002 15895190713.10116 2003 17034825870.646767 2004 17635834109.452736 2005 17629626426.533997 2006 18678880421.227196 2007 21271588530.679935 2008 25665083956.218906 2009 29798131686.23549 2010 33789610059.038143 2011 35933845445.43947 2012 40702402442.45439 2013 43289581011.60863 2014 45494064451.07794 2015 45338426841.791046 2016 45083583340.63019 2017 47515405383.747925 2018 48820796311.111115 2019 48320280146.71815 2020 31758649945.770065 2021 27540367673.330498 2022 29469208905.489033 2023 23270648541.268585