Year	current US$
2009	1812355113
2010	2364743746
2011	2599142044
2012	3570817080
2013	3110998328
2014	3394068217
2015	2855226726
2016	2073669213
2017	1785382622
2018	1772255488
2019	2224579005
2020	2538725805
2021	2835034302
2022	4589168984