Year	including construction (constant 2015 US$)
1967	4939825174.016939
1968	5129775488.860474
1969	5530093019.135071
1970	5717197276.79557
1971	6172730601.042642
1972	6525152158.624246
1973	6895454558.123351
1974	7342506869.302203
1975	8258775726.865526
1976	9046884247.944738
1977	9753826366.246052
1978	9625417813.368517
1979	10263556695.02295
1980	10060183226.98291
1981	10358048624.9418
1982	10429360020.965126
1983	10541081732.939613
1984	10915167027.573507
1985	11261951381.866585
1986	11232546184.903477
1987	11320093280.661783
1988	12424762159.89547
1989	12099915038.756884
1990	13069735352.136393
1991	13134021308.288355
1992	13464793446.167099
1993	13337341817.19422
1994	13778909417.402014
1995	14174428681.757233
1996	14589780608.85141
1997	15436805256.331305
1998	16030026574.093002
1999	16384368482.717018
2000	17053721336.836437
2001	17758877990.52805
2002	18245264407.137657
2003	18950997235.733234
2004	19637781996.93671
2005	20572340907.018185
2006	21478860907.653976
2007	22863392359.002815
2008	24212263799.06587
2009	22619885492.399227
2010	24936256911.87312
2011	26507635589.470978
2012	26710231133.94829
2013	26868537079.065655
2014	27803442548.064373
2015	28290982664.689953
2016	28827117998.829033
2017	29803139171.383007
2018	30741085469.953438
2019	31991444678.529697
2020	30317766627.515934
2021	32459686449.145573
2022	31907072849.458282
2023	32213457898.076477