Year	current US$
1990	2575000000
1991	2208333333.3333335
1992	2133437500
1993	1946704545.4545453
1994	1635510489.5104895
1995	1570483539.09465
1996	1838942476.6665366
1997	1524309376.3502808
1998	1746345127.8001425
1999	1208684288.0754397
2000	1174171996.6804423
2001	1255143514.7436757
2002	1383280747.016854
2003	1818082808.6103384
2004	2083608747.6267493
2005	2510798045.2757754
2006	3205813278.7420087
2007	3977086983.8312025
2008	5656998169.658324
2009	4535857032.617949
2010	4924893712.530263
2011	6298784751.640309
2012	7655787441.022375
2013	8481326636.147827
2014	8474216432.9862995
2015	7232596240.879991
2016	6829009201.095528
2017	7642059871.402518
2018	8242609854.224965
2019	8718198531.98516
2020	7840241435.274194
2021	9448594438.27235
2022	12798892094.84981