Year	including construction (constant 2015 US$)
1991	9747.890278703688
1992	9568.833717955855
1993	9886.818017464138
1994	9746.247450730196
1995	10070.446653896748
1996	10512.08725344625
1997	10620.606652592158
1998	10965.825973994723
1999	11297.014074051924
2000	11638.464964073539
2001	12124.678504056645
2002	12418.666590307224
2003	12192.046866900879
2004	12403.015709658208
2005	12697.27074954214
2006	12641.03923400116
2007	12511.862972114892
2008	13032.112642077585
2009	12337.17732329463
2010	12219.908731286594
2011	11950.73341241315
2012	11978.533711987693
2013	11145.873574048073
2014	11560.68744768915
2015	10899.60415478338
2016	12301.509531297479
2017	14429.012950759437
2018	15431.518281362727
2019	15000.310060296115
2020	15885.773181866092
2021	15467.852686163777
2022	15412.358108984668
