Year	current US$
1990	295625097.866211
1991	596213833.640735
1992	559013199.960267
1993	587293383.22066
1994	585398741.461662
1995	705461041.722163
1996	505078966.171346
1997	575483617.058965
1998	946855415.110495
1999	779516922.208088
2000	853124377.364404
2001	334806026.983659
2002	1077614333.80079
2003	1190453229.06338
2004	1556694986.29493
2005	1169503204.3783
2006	1406631333.73539
2007	1478177124.34879
2008	512604242.555666
2009	835838275.121537
2010	388865088.818039
2011	175350828.432233
2012	663611799.53703
2013	632449800.308204
2014	850004421.609008
2015	2536495494.47276
2016	2791345002.67649
2017	2838279820.50649
2018	3195122881.04686
2019	5154502025.51064
2020	6623717848.49243
2021	7739408352.27849