Year	current US$
1999	7063023.45893012
2000	364889969.324937
2001	267088650.817118
2002	344133473.075628
2003	490390606.498753
2004	747247383.677449
2005	1206891667.05456
2006	1933733025.04457
2007	3962686029.2813
2008	5320757379.24864
2009	2761280515.66594
2010	4058169022.6093
2011	4272392845.61974
2012	19384448.8169408
2013	700276649.966505
2014	1725863957.97366
2015	572961160.113148
2016	380866535.254967
2017	452780505.246501
2018	589591832.210686
2019	786065302.402136
2020	559210424.177083
2021	993098544.286286