Year	current US$
1995	54213625875.82148
1996	57960193232.32639
1997	66312312550.40946
1998	64397808841.230804
1999	62444342450.04952
2000	72202151624.77518
2001	74913958464.3036
2002	81090337376.76636
2003	87728600341.99608
2004	105709968485.1129
2005	119448368916.75896
2006	135285514608.73714
2007	164632973126.5059
2008	193873578589.45724
2009	189188580515.15485
2010	228816440726.08865
2011	270407865032.33948
2012	317765297151.8007
2013	370525922303.41187
2014	482787007720.6572
2015	483448759925.3428
2016	473933053211.06226
2017	516536762949.5598
2018	553652791931.1831
2019	540918204611.0378