Year	including construction (constant 2010 US$)
1990	8950204473.61504
1991	8987781287.0497
1992	8233766972.82579
1993	7269347453.09595
1994	6007296073.00571
1995	5199848171.58134
1996	5375221352.15063
1997	6340837466.6893
1998	7028289723.17717
1999	7560379140.55174
2000	8000155007.26582
2001	8384141153.96374
2002	8968629801.22758
2003	9920883581.1628
2004	11788960325.4488
2005	13386890579.2857
2006	15280112560.584
2007	16701193828.0606
2008	19297086556.5934
2009	19355700303.3632
2010	21694662638.4693
2011	23266115434.2479
2012	23740080387.2804
2013	23284144687.5685
2014	23633601355.9372
2015	21897651841.1196
2016	20875083069.6118
2017	21617960032.4715
2018	22716234109.4678