Year	including construction (constant 2010 US$)
1991	26468.6603254437
1992	26347.9730268216
1993	27028.4206194162
1994	28163.5979171068
1995	28284.2552687315
1996	28879.7231043611
1997	29018.1879762825
1998	28293.5753606719
1999	27762.0870527625
2000	28057.4344243293
2001	27776.5092059935
2002	27029.3685248939
2003	26855.8057173821
2004	27769.638727572
2005	27468.0600919878
2006	27639.171415057
2007	27725.6125021568
2008	27661.9778576625
2009	26920.6080558081
2010	27919.8071744233
2011	28681.4676056493
2012	27938.9283467484
2013	28204.5669370061
2014	27336.244571665
2015	24705.2354423218
2016	24784.2368421124
2017	24571.1642319595
2018	24424.6132949319