Year	current US$
1995	2772233874.3637023
1996	2901027679.646403
1997	2982092163.988236
1998	3104474711.3808255
1999	3123575713.9481344
2000	3284867338.731821
2001	3044858455.778041
2002	2958414578.4429927
2003	3382498070.780816
2004	3870545685.722213
2005	4480605204.398959
2006	5073952168.182086
2007	5767984585.348652
2008	6371071995.228297
2009	5595257286.929876
2010	5470790648.169084
2011	6232456759.898083
2012	7125450066.822592
2013	7980313944.57314
2014	8154618871.304404
2015	7928784840.463747
2016	8416986378.557204
2017	8529212863.3558855
2018	9063678628.270737
2019	8721954129.216991