Year	current US$
1995	2639181882.330735
1996	2820080916.315915
1997	2651978627.496536
1998	2910542299.882074
1999	3238256831.2120023
2000	3227514900.139909
2001	3743451774.25185
2002	4102993818.8303413
2003	4297498413.657771
2004	5384394659.646176
2005	6208352642.019564
2006	7204095806.310832
2007	9233534531.169357
2008	10906897664.493435
2009	11039707644.977825
2010	12341231333.797722
2011	14414479462.951866
2012	16578249162.936544
2013	18979582440.826786
2014	21096261687.675354
2015	20150891370.973183
2016	20172369303.044056
2017	21500887186.33275
2018	24732461286.566216
2019	26746319783.488926