Year	current US$
1990	1162294613.68452
1991	1338021239.19718
1992	1235194327.08739
1993	1367869087.58946
1994	756624386.09784
1995	790939338.466188
1996	1243452931.79877
1997	1380613549.20669
1998	1498253688.30542
1999	1717896191.58861
2000	1801199658.83036
2001	2045997033.05525
2002	1297641880.03661
2003	1550272569.67596
2004	1691974937.55449
2005	2846502779.4402
2006	2569138052.48477
2007	2913104636.78884
2008	2361135856.04805
2009	1281858005.35139
2010	2364946551.40162
2011	4109103794.88144
2012	3491043010.22578
2013	3111397372.40903
2014	3876791112.91593
2015	2569121205.48354
2016	2384444345.90564
2017	2712409080.76572
2018	2022727983.90965
2019	1926245310.65785
2020	1233575695.96612
2021	1416495009.16587