Year	current US$
1991	2708429618.2028537
1992	3257534149.072297
1993	3196767935.2470965
1994	4372609725.004553
1995	5303661672.134055
1996	5274008882.369719
1997	5568693693.693693
1998	5342732300.12972
1999	4582656226.916826
2000	4589243244.792114
2001	4451412445.48331
2002	4678625238.081701
2003	5190561048.5169
2004	6027593883.64872
2005	6809536809.53681
2006	7553899712.942039
2007	8470118248.641739
2008	9823302231.791927
2009	10037846092.556934
2010	12475554179.018627
2011	13578664536.509203
2012	16590928219.970835
2013	18018068032.89094
2014	18274461403.204742
2015	16273510027.982952
2016	15739562710.255398
2017	16868027117.4131
2018	17700647142.353367
2019	18966901420.479828
2020	15657202796.842636
2021	19086707722.660217
2022	20309080588.373795