Year	current US$
1989	57473684210.52631
1990	58571428571.42857
1991	54871794871.794876
1992	46969162995.59472
1993	42028247587.0008
1994	35646845328.781654
1995	36835382468.35426
1996	35594481568.14901
1997	40930181913.11186
1998	34116173717.37247
1999	24326935809.77532
2000	24390683266.690968
2001	30195640438.562202
2002	33216154694.576775
2003	39299692762.8243
2004	48057153600.30081
2005	68429764773.90316
2006	87495049504.9505
2007	115544752475.24753
2008	150976577591.86484
2009	102772472674.4395
2010	119243075447.35843
2011	144862990101.23923
2012	161123429786.07635
2013	174841986738.3961
2014	120299488695.68817
2015	78903768777.21083
2016	79539017414.90288
2017	98438349614.98471
2018	117986542302.24953
2019	143353591206.60782
2020	144998034685.97488
2021	173504295524.74332
2022	169105711770.3001
2023	189116593427.39227