Year	constant 2015 US$
1976	23921504003.592945
1977	25020669576.999973
1978	25488348122.11755
1979	26777448988.244896
1980	27711939548.91247
1981	27713852349.13591
1982	27692949126.276535
1983	28853293240.47263
1984	28989534766.364033
1985	30684701817.27966
1986	31838918091.780834
1987	31446431235.260914
1988	32998035084.7199
1989	34194963167.458572
1990	36387905410.162865
1991	37368038002.61208
1992	37176822332.016
1993	36381222814.022644
1994	37730604625.01054
1995	39933099773.70311
1996	40299250122.738266
1997	41413067923.37889
1998	42585523480.28905
1999	44467656767.42967
2000	47342382476.781235
2001	48634854043.0703
2002	47978455121.84764
2003	48298205641.79686
2004	49761042912.44139
2005	51984251557.28905
2006	56105282001.550766
2007	60473068112.68748
2008	61130709688.347626
2009	52128410567.167946
2010	56360625298.19919
2011	60435644242.88669
2012	61667658451.765594
2013	61828149491.3945
2014	63211401402.39451
2015	63751123948.03903
2016	66528445520.722626
2017	68673966072.96872
2018	71737142546.79292
2019	72337999252.71089
2020	67085609609.00777
2021	75585488007.92572
2022	78702886376.71478
2023	76606206581.914