Year	current US$
1995	102430000
1996	330770000
1997	540340000
1998	685810000
2005	2039730000
2006	3756230000
2007	17669640000
2008	17297270000
2009	4785130000
2010	5433970000
2011	4242610000
2012	4318000000
2013	6788170000
2014	5531890000
2015	4606740000
2019	2876220000
2020	2683690000