Year	current US$
2006	385750812.592607
2007	219055401.662427
2008	323733423.425163
2009	280535146.156007
2010	411228664.768474
2011	581461817.249483
2012	730116842.682108
2013	302735182.563871
2014	423536773.045141
2015	304795681.483575
2016	501289025.062301
2017	529916877.816867
2018	399316252.120044
2019	512140262.786979
2020	382971781.518465
2021	302160135.484634