Year	constant 2015 US$
1988	2940183914.6905828
1989	2901682777.873092
1990	2780149734.894868
1991	2820793394.2400265
1992	2668994415.2242274
1993	2710852925.312569
1994	2611601561.4009595
1995	2613927069.649312
1996	2639147705.8736825
1997	2599152999.750337
1998	2593479366.209559
1999	2519882280.902352
2000	2428164450.827232
2001	2380021652.00491
2002	2306571746.7701035
2003	2557027046.735542
2004	2393247904.8028736
2005	2663923998.8702006
2006	2589250117.20919
2007	2814761229.7102375
2008	2644588532.9922323
2009	2718854838.3155475
2010	2763013128.145219
2011	2763614887.5707583
2012	2714395099.167895
2013	2834282210.3778377
2014	2670908052.1203074
2015	2557091168.661589
2016	2584309661.734727
2017	2615594714.2327404
2018	2652570974.1210384
2019	2682973508.743507
2020	2537865636.5678816
2021	2433018137.712795
2022	2322483459.87802
2023	2192878883.080239