Year	constant 2015 US$
1988	4628215272.964037
1989	4488363696.4963665
1990	4843763001.750456
1991	5089605406.536797
1992	5007355077.141616
1993	4770401662.764107
1994	4244327033.5726795
1995	4436308085.284339
1996	4921477034.330474
1997	5169556715.776542
1998	5358258701.291334
1999	5575895489.753076
2000	5797831943.690733
2001	5866861045.960782
2002	5963111702.205106
2003	6126819620.883914
2004	6059640722.114826
2005	6114189461.580082
2006	6155596087.674093
2007	6330871610.580303
2008	6716370425.643464
2009	7112692399.30103
2010	6776671052.814602
2011	7132632087.698016
2012	7179706529.39895
2013	7443691171.872636
2014	7604679001.21344
2015	7787255823.051384
2016	7976279863.943589
2017	8154394748.0920515
2018	8306288219.433271
2019	8480710242.746416
2020	8380159165.421798
2021	8173218584.141659
2022	8042995955.030719
2023	7808726780.761246