Year	current US$
1980	70861904.922202
1981	60629452.85702148
1982	47981349.88845301
1983	58536008.54847798
1984	82650259.12929451
1985	71215695.4015345
1986	91940984.2114875
1987	117109893.19229355
1988	133171251.69982597
1989	154775962.47548148
1990	318772112.14291596
1991	341242688.087693
1992	230024029.318955
1993	261733477.58802694
1994	244155157.31423503
1995	252971766.9706
1996	248987182.17990994
1997	195055168.04535007
1998	196826769.88375998
1999	229579757.95726
2000	301932244.8265301
2001	269245091.16869473
2002	260637048.07211018
2003	268579214.59964
2004	323859720.1503148
2005	373136596.2277901
2006	473557690.6293249
2007	505650567.1528547
2008	478192402.38400006
2009	445156161.8071799
2010	449965587.9886248
2011	476181632.30336
2012	494798164.755635
2013	481541259.244365
2014	526452469.8006451
2015	551992165.834055
2016	553272017.42027
2017	556344053.8168802
2018	525084916.1402452
2019	562472663.1740751
2020	502227801.958725
2021	583532980.7472949
2022	684440970.0987957
2023	888000000