Year	constant 2015 US$
1980	114186362.50817841
1981	109515746.66065258
1982	112484460.51895736
1983	98428714.7448992
1984	77293389.44579025
1985	65673561.646575935
1986	69079537.96043651
1987	65073644.81882576
1988	67489161.07091744
1989	105223396.08039919
1990	186676363.11658892
1991	175020050.63609692
1992	111150916.82070361
1993	112390944.40521112
1994	131210327.72693379
1995	76079793.16791731
1996	190936266.19051075
1997	-38732885.94385413
1998	75204472.01687938
1999	3895172.6944409753
2000	95730703.72985576
2001	129270026.08112189
2002	160772931.57916558
2003	193203565.2272054
2004	194080300.46734026
2005	245373597.13370758
2006	236933627.78390455
2007	233403547.183596
2008	232375975.7731153
2009	257918281.4714149
2010	922522588.0717976
2011	1311746841.1145246
2012	943191642.7835704
2013	817914875.7587991
2014	774536664.2801423
2015	656730358.5500394
2016	712022656.3315148
2017	742910133.1140738
2018	492348114.529949
2019	496809779.8868819
2020	448896584.6741724
2021	449537209.8862944
2022	581062065.3093468
2023	737468889.6735884