Year	including construction (constant 2010 US$)
1991	18207.9216372379
1992	17173.3851843278
1993	17700.8338780342
1994	18949.522101586
1995	19065.8652376252
1996	18581.3017757283
1997	19007.0569439054
1998	18402.0952500082
1999	18001.5835400657
2000	18422.9911858743
2001	17859.0794146712
2002	18529.7627287546
2003	20041.8282433021
2004	19034.1282389397
2005	21420.8865969662
2006	20229.9199164349
2007	19195.0971997068
2008	20485.2086737816
2009	19754.4629494214
2010	20215.9371527161
2011	21452.6652257723
2012	21255.2366387842
2013	22357.1320903149
2014	22961.8982202694
2015	23020.8598487398
2016	24145.3325257176
2017	24304.083872706
2018	24227.542158016