Year	including construction (constant 2010 US$)
1991	3880.84094188093
1992	3760.98154274269
1993	3728.38917670766
1994	3645.28825485973
1995	3674.36454605191
1996	3756.442731294
1997	3715.91404301475
1998	3722.12188168772
1999	3759.71385988984
2000	3506.90504538118
2001	3476.67222231425
2002	4383.07432375142
2003	4399.67922477749
2004	4545.92048029531
2005	4742.64447860891
2006	4852.16215370563
2007	5144.94962777211
2008	5354.69413250765
2009	5271.33885034315
2010	5369.39862059961
2011	5287.08435421722
2012	5230.16554273349
2013	5385.30348515774
2014	5393.26344412412
2015	5411.49911502456
2016	5473.94712815041
2017	5576.29953258899
2018	4676.53283000816