Year	current US$
1995	2658786107.77611
1996	2926753780.0841866
1997	3453347736.7281218
1998	3387939224.2186646
1999	3349137564.2554274
2000	2589690683.6353073
2001	2593222482.205354
2002	2710213281.9453692
2003	3058316095.09039
2004	3657992398.6617856
2005	4157338109.2661405
2006	4861287987.987268
2007	5634681608.556642
2008	6427304729.996624
2009	5461868136.3392725
2010	6089848883.602503
2011	6984160012.619759
2012	7010987771.951204
2013	6996903200.007858
2014	7995200001.478194
2015	8152185183.5391655
2016	7911800004.601479
2017	10151705391.701262
2018	10652993522.619461
2019	10859684429.093296