Year	current US$
1981	672290452.1
1982	718928399.3000001
1983	636181056.8
1984	662691008.4
1985	646752158.5
1986	667353604
1987	786702726.8000001
1988	967042911.2
1989	864790294.4
1990	923627104
1991	687582594.6999999
1992	845630309.4
1993	886602492.8000001
1994	846825990.4
1995	827792943.9
1996	1017162726
1997	881274134.5
1998	880687645.1
1999	784085072
2000	1205937197
2001	1080823667
2002	968800432
2003	924165795
2004	1264316678
2005	1253096985
2006	1533413932
2007	2646724499
2008	2026727115
2009	1421527003
2010	2166268233
2011	3734049306
2012	3161115965
2013	3450420944
2014	3285310211
2015	3148252025
2016	3114976689
2017	1948540408
2018	753123313
2019	514643476.99999994
2020	270852761