Year	current US$
2003	1400000000
2004	1700000000
2005	2300000000
2006	2850000000
2007	3750000000
2008	3930000000
2009	3050000000
2010	4450000000
2011	5710000000
2012	6850000000
2013	7250000000
2014	7410000000
2015	7350000000
2016	8500000000
2017	8890000000
2018	10080000000
2019	11830000000
2020	3232000000