Year	current US$
1977	336676909.7431847
1978	376959300.0469443
1979	409139870.9521476
1980	486536306.459002
1981	515238329.5608419
1982	473508921.3244316
1983	470604399.3293903
1984	500358108.93074566
1985	486993428.87970436
1986	520497694.490305
1987	501259742.96699387
1988	583665650.4218332
1989	485658267.1252799
1990	533483609.11327225
1991	549149031.3985264
1992	522479809.2085149
1993	524295863.5675903
1994	551859297.2222584
1995	586232677.2807713
1996	637772896.1249677
1997	659285290.2436247
1998	684780507.9776095
1999	753145796.9551684
2000	882509324.7368251
2001	797464584.5676442
2002	879692396.3401718
2003	905025714.4079043
2004	1015471205.3905449
2005	1098498471.854919
2006	1657953088.8587303
2007	1770695038.97132
2008	1988799767.623794
2009	1850837633.040169
2010	1931653165.4007175
2011	1995886913.6159992
2012	2238807238.1000347
2013	2148878575.046029
2014	2045607573.4740188
2015	1803443293.1249611
2016	1699624493.2461243
2017	2061626301.8018022
2018	2014263336.7521076
2019	1888115284.777163
2020	1704555150.8310091
2021	1760954480.7148676
2022	2182731004.968489