Year	constant 2015 US$
1970	4983614928232.958
1971	5124808982445.849
1972	5407635361379.508
1973	5710709099196.472
1974	5496769607098.262
1975	5490287896885.142
1976	5768929695566.176
1977	5992076380815.683
1978	6287968266941.199
1979	6256400228571.442
1980	6135093593525.271
1981	6392593651275.106
1982	6446098630467.527
1983	6653365330661.45
1984	7178295881014.639
1985	7480990074020.648
1986	7734469817419.708
1987	8024137871273.84
1988	8480996012211.367
1989	8678627669789.737
1990	8778492691981.571
1991	8792909376946.663
1992	9072912302343.29
1993	9281086491092.477
1994	9694781318072.264
1995	10024557187346.727
1996	10438671176591.938
1997	10995492666403.938
1998	11614964307935.363
1999	12113633266041.996
2000	12602105434975.621
2001	12790069846012.48
2002	12992454249433.615
2003	13254017233004.014
2004	13780856124775.55
2005	14170889367659.73
2006	14715231176012.16
2007	14792403475623.242
2008	14441747069786.504
2009	14226839866612.105
2010	14854128253678.76
2011	15187459722784.979
2012	15742595081216.092
2013	15980354887681.32
2014	16500948767683.594
2015	17009512383262.281
2016	17184153513311.465
2017	17680061414539.836
2018	18186676447523.17
2019	18593002778986.508
2020	17899849874280.766
2021	18882534083744.973