Year	constant 2015 US$
2008	25730483258.937862
2009	27091908580.902546
2010	35867721869.117065
2011	44539768714.027466
2012	48805216576.313934
2013	55398220051.97515
2014	53446668017.224335
2015	41319054823.06737
2016	41805415092.54938
2017	46321532007.2518
2018	49441594844.66056
2019	47868802310.23807
2020	21071417883.655983
2021	27117310989.655983
2022	21725410086.3741