Year	constant 2015 US$
2006	4537583495.680993
2007	5361958842.093815
2008	6259690970.282942
2009	6736696822.993612
2010	8399260109.912134
2011	12921596690.50501
2012	14883871495.504196
2013	14347319688.20278
2014	14210036063.70671
2015	16714895486.563711
2016	17198555240.40609
2017	21290104548.719166
2018	22698739740.42893
2019	25588985706.697002
2020	22316225146.296387
2021	22050387053.73486
2022	22094606174.660286
2023	22122484075.897987