Year including construction (constant 2015 US$) 1970 387384672.588126 1971 359311185.48334277 1972 409807902.70154643 1973 398170277.2565912 1974 510696371.72503996 1975 441412094.724824 1976 386792993.75094575 1977 441949430.28681415 1978 414236481.09209096 1979 446669183.0918406 1980 440961443.0193497 1981 525180985.2382183 1982 705769174.530102 1983 678192190.7269162 1984 735389360.9358183 1985 802799952.0571057 1986 631209109.0931019 1987 630187738.183083 1988 667978560.4648167 1989 720109454.7354507 1990 779155648.8958377 1991 814505564.2995752 1992 888237877.8641826 1993 872306041.8875543 1994 914472556.8336099 1995 950330740.5801705 1996 1023470849.353864 1997 1059378715.8115402 1998 1057390820.7749978 1999 1075892367.2379706 2000 1174966421.9262457 2001 1331912601.465474 2002 1356669983.8879037 2003 1372638489.30134 2004 1387401003.185157 2005 1478902507.778187 2006 1523988858.3868992 2007 1497011343.9805453 2008 1363735181.7081268 2009 1384627427.9911156 2010 1431258633.3499782 2011 1433767977.3041298 2012 1486303700.303305 2013 1578448315.648856 2014 1639873703.5815554 2015 1865961048.6935935 2016 1882598067.266254 2017 1891428422.818522 2018 1982992027.3329918 2019 2251853908.1748695 2020 2368390205.973226 2021 2584301086.3428497 2022 2788179902.522837 2023 2991467768.792358