Year	current US$
2007	401615770.100117
2008	467637662.100303
2009	387987108.003343
2010	391444037.267804
2011	436051398.11219
2012	316540099.394092
2013	338892223.911167
2014	293925483.552574
2015	282147352.563711
2016	372579216.243566
2017	353353477.578747
2018	464808305.277137
2019	486210367.953961
2020	385375491.160309
2021	402433323.580482