Year	current US$
2000	87770356
2001	255936327
2002	441530923
2003	180665788
2004	287941546
2005	710121054
2006	434872856
2007	1346014492
2008	2202660153
2009	351352402
2010	695601840
2011	492191040
2012	457633455
2013	804403303
2014	1914961628
2015	1735304580
2016	4663638352
2017	14644591833
2018	13673956833
2019	12282785113
2020	13545734768