Year	current US$
1990	7218898915.35589
1991	6349353390.22942
1992	6800434950.35645
1993	5853463488.03535
1994	6260569180.10009
1995	5827826738.66949
1996	7741270984.71888
1997	6876465196.95454
1998	8579871085.51528
1999	7725483980.3097
2000	7263725645.53145
2001	9867385661.56582
2002	10240125113.6164
2003	13450095919.7657
2004	15496968835.2436
2005	17242418606.2022
2006	18654381167.6238
2007	21670006687.6418
2008	25657247165.0862
2009	21970084794.6585
2010	20687315991.163
2011	20813683159.9444
2012	18238823725.8826
2013	22034339013.8161
2014	22421313108.689
2015	23624002382.7266
2016	23800063720.5968
2017	25726014223.9753
2018	26070453050.0404
2019	25989715335.2219
2020	24272137854.5972
2021	30271819348.1021