Year	including construction (constant 2015 US$)
1981	71380809338.43047
1982	61880452460.697205
1983	50138913908.07432
1984	50967817609.21634
1985	53251653820.17573
1986	50696274741.62674
1987	53440400242.052025
1988	57785348436.68649
1989	57348212486.364365
1990	67704684112.70568
1991	66262078028.26674
1992	70321515792.42764
1993	65531725068.565796
1994	61653320435.271355
1995	59796602816.4742
1996	63174603055.95778
1997	64374129416.86104
1998	64626559505.33157
1999	61957681412.43668
2000	66579577087.744385
2001	70305318813.60448
2002	71210890911.01189
2003	79870071976.0988
2004	81276844125.00348
2005	82654843038.76093
2006	81031536495.327
2007	79469487878.34784
2008	77845024420.00153
2009	79795495155.91531
2010	83970747594.10313
2011	91016806100.75821
2012	93226419333.37857
2013	95242799553.4527
2014	101678505845.37914
2015	99398039146.14139
2016	90600940626.42615
2017	92545176641.93004
2018	94276935509.05615
2019	96456722911.03445
2020	90816956363.29808
2021	90392187062.39621
2022	86212666388.892
2023	86837493492.1714