Year	including construction (constant 2010 US$)
1981	252074292985.583
1982	241027418881.346
1983	224797935318.048
1984	234198643228.979
1985	236447645452.635
1986	232768066248.467
1987	235950740918.838
1988	244593407658.825
1989	247404541205.823
1990	259094354684.133
1991	251333565657.521
1992	252994815983.175
1993	246203610146.37
1994	243881165466.292
1995	244288267342.24
1996	253599805450.429
1997	260080984751.803
1998	261808002045.679
1999	259719933360.095
2000	273991539611.626
2001	282611686233.452
2002	291210071479.284
2003	306627361958.066
2004	320412114366.131
2005	338571133349.99
2006	348325100565.623
2007	366120537815.181
2008	372463047729.926
2009	370648170790.364
2010	389090116977.414
2011	405413725073.908
2012	412404303829.263
2013	428768568915.952
2014	445380517329.096
2015	452170674645.317
2016	448554046479.827
2017	460605265961.644
2018	511505585629.889
