Year including construction (constant 2010 US$) 1981 1123432619.98953 1982 1226292126.48893 1983 1322545913.08208 1984 1471644856.89034 1985 1553743701.5139 1986 1656131231.15325 1987 1730680853.49241 1988 1851469913.21413 1989 1951449231.36282 1990 1410734885.57137 1991 1201721577.57901 1992 1086783060.44769 1993 1004480032.85327 1994 1027497761.12287 1995 1319388768.12166 1996 1293861319.16235 1997 1295450867.76293 1998 1331535369.21835 1999 1342345991.00028 2000 1362303020.52033 2001 1536261321.82987 2002 1589393428.2549 2003 1694937449.23785 2004 1953538131.13632 2005 2035941267.55389 2006 2164060110.05227 2007 2315994476.31144 2008 2297712115.68325 2009 2288241101.26846 2010 2386494389.87485 2011 2595873356.61791 2012 2981069227.23332 2013 3417543727.11328 2014 3849994236.82387 2015 4232779676.15681 2016 4214014042.7402 2017 4228854629.64833 2018 4492008464.66954