Year	constant 2015 US$
1976	5730509540.969833
1977	6206050652.721367
1978	7117071955.118878
1979	8597629976.705223
1980	9559261689.17003
1981	11201420242.633415
1982	11988425687.654263
1983	11722313980.564539
1984	12225399095.65027
1985	11894464001.403332
1986	12549210740.759058
1987	12840763337.627913
1988	13028517104.197895
1989	11630658934.986917
1990	11598569492.67885
1991	11785136086.300434
1992	13476276723.01409
1993	14080955882.281057
1994	14780987323.056314
1995	15697537788.503893
1996	16025148664.362085
1997	16555336763.019249
1998	17054012095.809536
1999	17632063087.418163
2000	18380669691.802208
2001	19349323186.58601
2002	20468450874.83256
2003	21320279753.992477
2004	23146833797.589436
2005	25032512558.608196
2006	27058387611.46847
2007	29270727368.86562
2008	31384186979.027035
2009	32960837541.535793
2010	33723826288.353676
2011	34646908078.41634
2012	35488605511.9193
2013	36414839440.074326
2014	37647146046.473785
2015	38587017887.323944
2016	39356512808.34939
2017	40330034782.84851
2018	41103997444.4992
2019	41823826702.47796
2020	41362613665.93589
2021	42874682706.30497
2022	43915711431.55829
2023	45064321343.93934