Year	current US$
2005	3563000000
2006	3517000000
2007	4254000000
2008	4509000000
2009	5061000000
2010	5817000000
2011	5372000000
2012	4585000000
2013	5017000000
2014	5331000000
2015	5635000000
2016	5698000000
2017	5865000000
2018	6068000000
2019	5354000000
2020	1639000000