Year	current US$
2006	509274363.07745206
2007	528828444.98534197
2008	466926845.58944404
2009	469840902.7501397
2010	632895935.44637
2011	839284595.7275696
2012	1000217918.7352579
2013	855041154.3064526
2014	734062239.6970161
2015	592230317.3929405
2016	766134870.4745672
2017	852705489.6680691
2018	824249365.0487493
2019	842322224.2423667
2020	600698329.9005635
2021	663530069.1046981
2022	616331497.6296504