Year	current US$
1990	881797678.547467
1991	1049462140.00199
1992	1229881354.22472
1993	1209259306.67979
1994	1147039909.50066
1995	1317292959.37361
1996	1595391215.15888
1997	1633259311.52705
1998	1518468593.70214
1999	1544692673.29576
2000	1804559846.50208
2001	1978527431.36402
2002	1858890717.56623
2003	2122301170.85626
2004	2178224367.65423
2005	2296843856.59895
2006	2176976652.23953
2007	2089103559.19528
2008	2333004718.53393
2009	2125164769.68483
2010	2573756458.25767
2011	2833696771.23874
2012	2962218314.04726
2013	3495343904.79224
2014	3866413083.01606
2015	3747119044.72306
2016	3980077626.99498
2017	4059754571.05695
2018	4305352334.81124
2019	4700993937.28925
2020	4753567816.15314
2021	5232703684.74056