Year	current US$
2006	59999.9986588955
2007	189999.99761581398
2008	319999.99284744303
2009	209999.993443489
2010	129999.995231628
2011	109999.999403954
2012	157915.29417038
2013	205475.077033043
2014	160020.69413662
2015	151847.004890442
2016	135361.105203629
2017	125799.99864101398
2018	30308.799818158197
2019	163072.109222412