Year	current US$
2007	36172959509
2008	43492661191
2009	40395074321
2010	43607937596
2011	51148249215
2012	51279423966
2013	54346224629
2014	57101557330
2015	53795507159
2016	55536700708
2017	29833875250
2018	30114429626
2019	29872166791
2020	29244241618
2021	38184112955
2022	77973722315