Year current US$ 2001 997226.7102765533 2002 1326660.6044627894 2003 1631797.3892407496 2004 2184389.324283521 2005 1918447.9605014888 2006 2061281.0129868267 2007 2274363.357708325 2008 2699714.74408208 2009 2271530.762950893 2010 3185759.092463952 2011 3393628.6507146885 2012 3568736.560282741 2013 5186595.754369708 2014 5115742.621359211 2015 6399119.007207714 2016 6981480.613255795 2017 8106676.961597802 2018 8184832.322755808 2019 9646273.402071452 2020 2799051.360850637 2021 2092835.5027042688 2022 2031378.0335697196