Year	including construction (constant 2015 US$)
1988	3884546693.671167
1989	3817989163.2711916
1990	3676486100.704652
1991	3637547598.7492747
1992	3278491536.197262
1993	2638928960.757405
1994	1834386165.089627
1995	2242671238.337266
1996	2237917017.9216976
1997	2323226737.496895
1998	2419201787.447473
1999	2475027023.656916
2000	2540749426.4777074
2001	2520654803.645486
2002	2581641787.459108
2003	2644103363.068845
2004	2640956904.6941085
2005	2723916366.9258
2006	2886510664.4914236
2007	2909091011.456709
2008	3014480725.528359
2009	3255541504.224717
2010	2859820102.9312196
2011	3186688481.7366734
2012	3265876536.3530254
2013	3437838593.8775954
2014	3668513129.9796743
2015	3869173518.6337934
2016	3911718635.418019
2017	3941371012.6961517
2018	3983350249.089271
2019	3633634462.4772735
2020	3457840801.667932
2021	3371969142.184171
2022	3359348445.011882
2023	3230969869.972082