Year	including construction (constant 2010 US$)
1991	17148.6644849854
1992	14404.8008821672
1993	13257.9562342226
1994	11595.9760567968
1995	11670.8542122467
1996	11435.3693601518
1997	12367.5215181331
1998	12681.0555378397
1999	12971.0266328191
2000	14026.7751546251
2001	14250.3630581344
2002	14690.2188251051
2003	15805.7678845274
2004	17289.7661974156
2005	18021.8006397553
2006	19303.7861880635
2007	20171.2463692734
2008	20675.2073495798
2009	19855.8354957848
2010	20701.7052847985
2011	22078.9062563271
2012	22221.5386549994
2013	22791.3418168665
2014	22470.0776819343
2015	22833.1793287901
2016	23431.8806448696
2017	24178.1914117318
2018	24740.4572063596