Year	current US$
1995	2730000000
1996	2770000000
1997	2570000000
1998	2545000000
1999	2750000000
2000	2521000000
2001	2380000000
2002	2581000000
2003	2989000000
2004	3531000000
2005	4243000000
2006	4289000000
2007	5322000000
2008	5702000000
2009	4949000000
2010	5299000000
2011	6565000000
2012	6784000000
2013	7175000000
2014	7503000000
2015	6370000000
2016	6285000000
2017	6565000000
2018	7280000000
2019	7040000000
2020	2196000000