Year	current US$
1974	60248103.62099999
1975	139998419.4905
1976	170825509.33999997
1977	245958070.79279572
1978	305453695.3259762
1979	380800574.3736169
1980	518917396.0063972
1981	463998938.08710915
1982	364134025.47559285
1983	359196532.0970389
1984	311697347.22440064
1985	409886754.1402095
1986	552424634.5575761
1987	579776508.0404749
1988	634503545.906633
1989	637025980.6095915
1990	711095246.7294552
1991	744048879.4996037
1992	875127137.2579421
1993	1524387332.4144292
1994	1198252979.468823
1995	1033892975.7783592
1996	1087241699.1211166
1997	1278708492.8499115
1998	1186080345.4520774
1999	2081216505.8855312
2000	2197264227.375976
2001	2085343579.1591601
2002	2286595770.442092
2003	2635146673.8830113
2004	4102042871.0809407
2005	16722662965.160023
2006	19409694975.207157
2007	21099158358.164867
2008	22797325933.278564
2009	21884173259.2057
2010	23801903316.975113
2011	27623774681.546722
2012	27691377000.332428
2013	28076823908.16005
2014	29072581838.86633
2015	31217369941.629818
2016	28389901690.141644
2017	31601716352.88262
2018	34564118509.71056
2019	34978100385.43532
2020	29228222419.863243
2021	32711580058.9369
2022	35205867000.64819