Year	including construction (constant 2015 US$)
1960	909807180.7782773
1961	900228687.6657637
1962	976257976.6639681
1963	1070246940.2436826
1964	1136847400.0959444
1965	1359547364.7214472
1966	1467006084.206127
1967	1570423876.9317842
1968	1775463494.9089184
1969	1885316837.6450114
1970	2053090130.9915183
1971	2258728404.6746454
1972	2540545631.4650283
1973	2756959710.028856
1974	3075594269.5679636
1975	3184699292.6493025
1976	3462774920.4535136
1977	3827505978.1344385
1978	4116357410.819351
1979	4360309656.916912
1980	4410896073.699656
1981	4225462433.722591
1982	3655691758.046721
1983	3804906720.963244
1984	4234292607.03787
1985	4297600459.910533
1986	4578819030.834632
1987	4810798160.675127
1988	4903440148.680374
1989	5140058861.128365
1990	5256946409.758986
1991	5430377855.710899
1992	6022186196.489442
1993	6380500377.630957
1994	6610926592.6554165
1995	6892504018.067036
1996	6680801462.096891
1997	7183054626.566911
1998	7770388612.023065
1999	7958539710.00248
2000	8256531375.207713
2001	8490208763.823324
2002	8728497090.597038
2003	8950661781.966133
2004	9348104223.272724
2005	9653237192.124107
2006	10219083043.041035
2007	10868540008.715576
2008	10958443149.908308
2009	10325714737.342701
2010	10658506851.03516
2011	10973953849.877035
2012	11395565044.690365
2013	11004820198.305597
2014	11119369197.011562
2015	11270254154.32043
2016	11594305711.878033
2017	11813976329.106981
2018	12126416486.292585
2019	12092109184.113516
2020	12351236687.382074
2021	13849702221.855497
2022	14133669893.521082
2023	15313664168.514437