Year	current US$
2007	1411406488
2008	1146674842
2009	1044151986
2010	962856322
2011	1135855702
2012	925028687
2013	743237305
2014	679502827
2015	702202228
2016	811594532
2017	622261378
2018	858269336
2019	790975094
2020	618349395
2021	806609802
2022	804989238