Year	current US$
1977	153899577.65089396
1978	196626845.6489354
1979	323850448.9699654
1980	348306298.9959235
1981	350088291.6098247
1982	392810541.3083538
1983	408118240.14132
1984	392098378.2019281
1985	456391950.8575658
1986	437561122.8243351
1987	384578831.5286577
1988	428506843.20324117
1989	456665234.8351341
1990	369162684.4409874
1991	396764476.5334456
1992	386487226.6912346
1993	363183582.3136843
1994	308534854.51468456
1995	242352762.67087278
1996	474813500.2908805
1997	435879989.683546
1998	508213574.2703505
1999	419860746.6689764
2000	678796937.7858847
2001	934113400.814491
2002	1009171186.6815077
2003	594041436.3859375
2004	1058125463.8039806
2005	857023865.3574071
2006	900809565.178638
2007	1240662696.916379
2008	1360150097.8591669
2009	1145833586.553931
2010	1241063300.2112517
2011	1810929419.0472262
2012	1547507964.3356447
2013	1860656958.6089356
2014	1943991393.995895
2015	1441700160.7181814
2016	1573681203.4815564
2017	1842516835.129272
2018	2004839795.745616
2019	2103029047.364389
2020	1616493269.7288532
2021	1526553515.2753546
2022	1612286738.3897479