Year	including construction (current US$)
1981	64548444323.49469
1982	49696885355.36398
1983	33127270362.07951
1984	22299505263.181213
1985	24680219722.81115
1986	17993190819.36376
1987	17323517772.87406
1988	16192782090.608778
1989	15573478537.335594
1990	19134251719.4669
1991	22004430880.201767
1992	19630936430.33878
1993	18816835854.918438
1994	25179864018.18182
1995	51492776768.181816
1996	69547576268.18182
1997	70797455581.81818
1998	62690778354.545456
1999	17367179006.28301
2000	23395862360.31536
2001	20799410715.895073
2002	21901251042.931786
2003	27234657452.505116
2004	38543661707.70972
2005	49541882382.83993
2006	61406061928.41202
2007	67741818006.02091
2008	83899011864.51993
2009	62650322719.05989
2010	92912623573.99373
2011	117202057472.82256
2012	125610954976.57895
2013	133890235362.27596
2014	141499599245.94803
2015	99398039146.14139
2016	73537418563.78316
2017	83848100238.60141
2018	108527454572.91597
2019	129934927726.08563
2020	121968713985.74695
2021	138456656530.88306
2022	145452907609.88745
2023	118221117581.39893