Year	current US$
2005	3470887.10432921
2006	3616436.13876387
2007	3843304.76065084
2008	4070087.61801528
2009	4432601.27821781
2010	7881811.21127916
2011	9237557.15634866
2012	23120296.3330758
2013	23658445.1542308
2014	23818965.8207317
2015	18452182.37
2016	19452182.37
2017	22766242
2018	23766242
2019	16047952.6682637
2020	17684289.6565206
2021	13546081.0876279