Year	including construction (current US$)
1990	4878480745.160032
1991	5087014579.517069
1992	5637202139.88343
1993	6277328542.880933
1994	7783707735.22065
1995	4301101943.209877
1996	2838257426.6444774
1997	3084629587.0069604
1998	2192973472.890054
1999	3292721796.9082055
2000	4721917150.310559
2001	4424815996.2060585
2002	4828471293.826246
2003	5407549420.6329565
2004	6628944475.998748
2005	8620669245.459976
2006	9904982561.203602
2007	11324013807.502222
2008	14147448018.042196
2009	13265184736.311195
2010	16368445658.727629
2011	17379876412.53508
2012	14071482518.65073
2013	15759683505.979805
2014	17243129649.122807
2015	14374318644.97211
2016	8112027055.134977
2017	6958590453.550241
2018	5497254991.51884