Year including construction (constant 2010 US$) 1966 2418792333.62747 1967 2403806345.59578 1968 2582763500.62422 1969 2568538085.98571 1970 2942160965.19537 1971 3023595005.28375 1972 3200992438.27578 1973 3187946239.97479 1974 3148389440.13207 1975 3022035574.73632 1976 2672222937.02904 1977 2511712996.49606 1978 2482540024.10255 1979 2402665121.53035 1980 2174566196.36424 1981 2193393916.5586 1982 2154977902.77671 1983 2218345089.09516 1984 2138090263.80203 1985 2040567150.40424 1986 2087214445.79782 1987 2260525389.96611 1988 2411215976.84914 1989 2738159995.03102 1990 2887383942.02385 1991 2830748227.83219 1992 2851257537.13108 1993 2915522086.91259 1994 2912298743.21379 1995 2946105295.30837 1996 2831021129.37325 1997 2771998467.48184 1998 2698601851.87138 1999 2686973138.2403 2000 2677472756.81226 2001 2678644881.79364 2002 2671195719.08302 2003 2746227140.58857 2004 2851317398.7877 2005 2906391850.21551 2006 2868251520.22924 2007 2911435072.17488 2008 2818821775.94861 2009 2453658576.15687 2010 2374247108.66827 2011 2442230357.5884 2012 2372319271.52784 2013 2382683323.99479 2014 2387001679.18936 2015 2425188277.267 2016 2451792429.80493 2017 2473553855.44611 2018 2586864411.21204