Year	including construction (constant 2010 US$)
1991	14768.8736581768
1992	16739.1988812764
1993	16833.5512688831
1994	16817.5903295957
1995	15890.886056526
1996	14723.0209650235
1997	15226.3772788447
1998	15093.2404492326
1999	15884.7150173759
2000	16261.5268297262
2001	17573.0356023038
2002	19993.9764757093
2003	18128.0749128449
2004	17920.458004783
2005	18657.5771211627
2006	19586.6027282603
2007	19426.5022900088
2008	20061.3801511828
2009	18548.0707874507
2010	18309.8020416544
2011	18423.0828697354
2012	17870.9377533464
2013	17729.9413798862
2014	17408.5649085095
2015	17366.8549530477
2016	17428.7727734141
2017	17128.0782801776
2018	16973.0547262686