Year	current US$
2006	18359999.7963756
2007	19280000.1334399
2008	20410000.1100451
2009	19159999.974072002
2010	24199999.6453524
2011	16899999.8271465
2012	20369999.933987897
2013	22799999.8629093
2014	24069999.7786433
2015	20084215.259179503
2016	20892116.4432541
2017	23300236.326176703
2018	25605827.8121054
2019	23800550.542771798
2020	22284660.3132784
2021	22460941.0315752
2022	16380291.059613228