Year	current US$
1975	7075100695.682298
1976	8481441948.675272
1977	10530537666.197195
1978	12293161417.19224
1979	15359233808.789547
1980	21040631379.55089
1981	21001566255.162468
1982	20719390900.361546
1983	19799540393.966705
1984	20065158813.908993
1985	19711831130.74738
1986	20748593857.325935
1987	25513234796.193287
1988	28124031927.914516
1989	28730234881.22578
1990	33890663890.84523
1991	35877596793.74403
1992	39303152779.741425
1993	38476262969.30636
1994	40639521816.49646
1995	47227955200.39051
1996	49170282331.827484
1997	49548179500.22929
1998	50593486748.822296
1999	52839936531.27468
2000	55909436459.47229
2001	56104114431.85089
2002	61196326388.68596
2003	75225425145.74211
2004	89281970467.4135
2005	101041826683.49155
2006	113035701751.59474
2007	135646182748.02179
2008	148958990447.76508
2009	129389535768.02322
2010	138174096381.8977
2011	157064408558.82938
2012	155912881125.31052
2013	162812437315.9065
2014	167893016317.08853
2015	151721848514.7288
2016	159200150156.2276
2017	176977448024.0403
2018	193850030853.8867
2019	195442320173.6637
2020	178185121948.33084
2021	208006924432.8395
2022	223331355321.8637
2023	234402049500.7645