Year	constant 2015 US$
1970	3717699861.0088344
1971	4766421271.679018
1972	4702064221.030566
1973	5286793839.120283
1974	6012014553.737323
1975	5670793800.9326
1976	5496321603.064143
1977	6317050643.602588
1978	6471656015.672318
1979	6692505623.3315935
1980	7077820440.345741
1981	7539625985.020741
1982	8039012673.8636055
1983	7011751585.490857
1984	7682645805.517291
1985	7753980873.241148
1986	8030968333.431395
1987	9378158190.830385
1988	9474996472.162106
1989	8967062504.36687
1990	9269414911.195745
1991	9696064843.333721
1992	9208779667.755974
1993	8927988668.20451
1994	9011427250.425932
1995	9253330816.48902
1996	9850634784.492586
1997	10487677998.447948
1998	11998719520.686693
1999	12499033704.965607
2000	13285641906.59105
2001	13029717781.791512
2002	12803006655.252964
2003	13500720141.79639
2004	14861497457.875904
2005	16900002118.795748
2006	18734802890.25576
2007	18772740284.121323
2008	17490435158.40123
2009	14180631854.59655
2010	13829718465.96175
2011	14263515314.64561
2012	14452759443.070171
2013	14586138849.290977
2014	15238083475.05801
2015	16206006148.939922
2016	17449165386.54905
2017	18688134733.227833
2018	19531858912.485184
2019	19615875608.310863
2020	19284172444.1403
2021	20646897020.03652
2022	22339886783.62327
2023	22606443933.993473