Year	current US$
1980	579317045.0956173
1981	518534712.79508746
1982	386484692.4617062
1983	392458250.25581187
1984	257487845.71982077
1985	159471383.33763334
1986	147181645.78439164
1987	294986229.4275191
1988	374759635.49080086
1989	375836055.0079175
1990	754884124.4283178
1991	462161796.1007708
1992	632779677.7996181
1993	497066659.48535717
1994	699115888.8790632
1995	769763129.3449147
1996	816820174.4031479
1997	736248931.7403226
1998	865628538.6206641
1999	793467746.2122824
2000	668405859.6264921
2001	791598864.0499021
2002	622558714.2922603
2003	955151981.9097766
2004	1259745161.2638557
2005	1425741804.64307
2006	1777356991.9167738
2007	2126910370.163722
2008	2364799141.8054514
2009	2334462642.646448
2010	2718389754.783261
2011	2761902801.702734
2012	3485184806.8490076
2013	3540180655.020602
2014	4324614136.438017
2015	3463621706.7314725
2016	2362054678.0025816
2017	2291016828.2600527
2018	2040857538.8950622
2019	1922566387.973755
2020	1474231785.2222164
2021	2172004799.303307
2022	2512309148.1772156
2023	3427847721.2798605