Year	constant 2010 US$
1988	801081478.352586
1989	740234107.741924
1990	818383604.725871
1991	856295027.187443
1992	851598050.245066
1993	630117522.115993
1994	410443523.580142
1995	917355727.438362
1996	1025024891.19442
1997	1103428275.54028
1998	1067658989.59447
1999	1323463579.99477
2000	1566261157.32387
2001	1546750637.71706
2002	1586132982.84931
2003	1635270587.78497
2004	1582881229.58151
2005	1605643502.45612
2006	1640690176.56463
2007	1690911699.25622
2008	1738242774.59865
2009	1800026086.68685
2010	1682601663.12739
2011	1843744102.84284
2012	1957194161.29721
2013	2076425114.44989
2014	2118697906.93129
2015	2196017373.52122
2016	2219502258.23311
2017	2239374083.75855
2018	2291040830.12472