Year	current US$
2001	1820933600.33993
2002	2085387093.38458
2003	2441308362.76417
2004	2949150161.34014
2005	4434252817.18907
2006	5758079482.53299
2007	5616537734.4659
2008	7744279452.82234
2009	4247888646.19323
2010	6955899331.58191
2011	10055946686.4244
2012	10143401816.9858
2013	9144256593.12744
2014	8559015082.57597
2015	6116108818.2907
2016	5358245055.50525
2017	5551181032.34069
2018	5909688457.53835
2019	5918057811.03935
2020	4801591653.01262
2021	5410759977.34636