Year	current US$
1990	47918188.9859239
1991	159217844.237135
1992	119888489.000077
1993	45602854.5495268
1994	112242478.319886
1995	119229119.142296
1996	210761461.621644
1997	133857436.908363
1998	315275228.694254
1999	241241464.767441
2000	266946932.66548
2001	363724829.650756
2002	401830711.287032
2003	479415560.438864
2004	517426044.656841
2005	967259672.794542
2006	1033072163.44037
2007	1133322090.83773
2008	1658333719.09807
2009	1353422007.13578
2010	2062593886.2111
2011	2100142290.37767
2012	2280463840.57531
2013	2440536602.34591
2014	2740607728.02385
2015	2348830864.60602
2016	2078102446.00558
2017	2033643740.09886
2018	2942337167.05433
2019	3082846977.57666
2020	1610139843.15015