Year	current US$
2006	16550000.034272665
2007	17610000.0385195
2008	17280000.01050532
2009	15720000.147819517
2010	20230000.061914332
2011	13479999.983683227
2012	12869999.924674628
2013	17059999.98934567
2014	18510000.055655833
2015	14628552.36791074
2016	15731798.489578068
2017	18833784.33482721
2018	21603478.08990628
2019	19320648.4541297
2020	20639935.073908415
2021	20606628.03426385
2022	24858091.861009594