Year	current US$
1990	1232033056.46749
1991	1099924997.21721
1992	56953927.9426064
1993	213215763.613791
1994	166717182.168972
1995	339979608.020845
1996	353917869.422971
1997	557574726.437467
1998	744089755.809112
1999	713377565.791443
2000	659365221.278498
2001	704284333.727049
2002	790007269.608977
2003	800183280.724978
2004	926691767.579119
2005	1316162470.91178
2006	1696552496.08238
2007	2016781260.9253
2008	2701557935.73515
2009	2640457825.32968
2010	2864565163.21953
2011	3047613017.60162
2012	3266547861.50713
2013	3336902485.65966
2014	4419609843.17225
2015	3555826664.06402
2016	2505170144.76406
2017	2556588426.67906
2018	3005705882.35294
2019	2873941176.47059
2020	3578117647.05882
2021	4635694476.70164