Year	current US$
2006	556000000
2007	626000000
2008	617000000
2009	388000000
2010	437000000
2011	628000000
2012	469000000
2013	498000000
2014	441000000
2015	352000000
2016	361000000
2017	421000000
2018	472000000
2019	465000000
2020	419000000
2021	515000000
2022	742000000
2023	679000000