Year	including construction (constant 2010 US$)
1991	29014.4872228088
1992	28285.9227756696
1993	28237.663454944
1994	28978.7411942558
1995	30057.1167714265
1996	28924.6741050509
1997	32163.03796592
1998	32278.5159002334
1999	33979.5056609193
2000	35208.9834562122
2001	34385.0324000671
2002	37484.309490001
2003	37395.9931343477
2004	35869.1558860635
2005	36918.1289724056
2006	38653.9357838088
2007	39190.2850780054
2008	39758.6414415862
2009	29660.4481334256
2010	35073.5557964393
2011	32602.557653672
2012	30799.8599171891
2013	33922.3716778347
2014	33364.308144302
2015	29739.6391641229
2016	29409.6753346479
2017	27330.9104344481
2018	28631.468024134