Year	constant 2015 US$
1970	3961293898990
1971	4105934409462.553
1972	4309806158851.6025
1973	4550574589955.415
1974	4572279302344.483
1975	4530977001555.734
1976	4745279484388.476
1977	4881509021271.16
1978	5076095010411.227
1979	5242491694241.241
1980	5238149932816.068
1981	5167686043512.394
1982	5206525127694.04
1983	5297341737949.62
1984	5423788316862.581
1985	5562277074062.656
1986	5859033600741.345
1987	6043205205502.043
1988	6322718685937.277
1989	6558219531448.483
1990	6800022533606.532
1991	6948432605579.332
1992	7055053789215.982
1993	6996600323593.891
1994	7160555586158.117
1995	7356023399661.819
1996	7492585229845.14
1997	7697442825216.073
1998	7957905836394.351
1999	8200237768296.759
2000	8404140293693.834
2001	8568965458343.954
2002	8634247575832.769
2003	8704014179356.185
2004	8933530251835.104
2005	9049126936222.77
2006	9327648262237.389
2007	9591762656733.768
2008	9473970110681.896
2009	9112833541509.906
2010	9273337110905.348
2011	9365796367514.193
2012	9246102725020.68
2013	9261118308167.361
2014	9425050887849.027
2015	9656759673190.756
2016	9920067064104.793
2017	10151823762265.648
2018	10326182895023.59
2019	10460406030060.129
2020	9657784955285.23
2021	10192371199292.693