Year	including construction (constant 2010 US$)
1970	39673203504.5763
1971	41367851780.0705
1972	44236672519.4809
1973	43051115427.8703
1974	42731673386.2902
1975	41144793588.2789
1976	42695156625.7562
1977	43386714793.0993
1978	43415362526.2821
1979	44247616185.7728
1980	46121325729.1199
1981	43567630943.7552
1982	45619084916.1862
1983	48476514626.8497
1984	51268195747.7452
1985	54386282722.0476
1986	57688027986.8245
1987	57829671368.1805
1988	57836354067.1132
1989	59016613220.8407
1990	57452197205.7627
1991	57251902223.9213
1992	58011765845.9391
1993	54872861759.4893
1994	59269318776.8655
1995	62861979792.2325
1996	62961468685.9617
1997	66278028475.7938
1998	67706632646.2574
1999	69740478567.5867
2000	72405387908.2338
2001	71639045176.3179
2002	70518000560.0921
2003	69702720536.266
2004	71507348675.1155
2005	70904563861.6128
2006	73625911638.8028
2007	71796688522.1125
2008	70959077715.002
2009	63454786609.3535
2010	63448925556.6471
2011	65198727968.5993
2012	66247592004.0184
2013	65433165098.2606
2014	65747760476.1672
2015	66771286833.8349
2016	69862774945.2132
2017	71729516053.7511
2018	74334807234.9675