Year	current US$
1978	6539148.5120165385
1979	23575422.433351126
1980	39428922.14330947
1981	53138017.98988992
1982	42924727.87558837
1983	21433238.702502824
1984	21524009.89210551
1985	51647896.911918454
1986	54487491.55462719
1987	93319461.01412094
1988	80307650.15767768
1989	49599180.526619725
1990	69294382.95788158
1991	60409503.05675642
1992	83594483.97865425
1993	-1194307.7485931676
1994	-17462095.3008761
1995	74301353.67716992
1996	-28090124.955800466
1997	60585195.51258452
2003	47697509.728243075
2004	58194693.56773407
2005	36810188.52932557
2006	123825787.50415315
2007	118395048.82387882
2008	5017676.336186145
2009	76971369.40480174
2010	-5451071.878188518
2011	88622315.40526131
2012	222465147.86865333
2013	76865681.56533971
2014	140278488.06027323
2015	260370052.45748964
2016	295622815.8846661
2017	281168680.9301184
2018	261898415.44956955
2019	278605825.29105467
2020	397375765.19780487
2021	483783328.7806104
2022	616618507.2311299