Year	including construction (constant 2010 US$)
1991	9062.74414761877
1992	8810.03694241874
1993	8766.05607143761
1994	8724.50458813621
1995	9015.9763874888
1996	9188.11075999941
1997	9563.40970157283
1998	9765.09480034051
1999	10048.5519922225
2000	10561.8743346454
2001	10731.1776021024
2002	11098.5957759238
2003	11518.1343497947
2004	12009.4681779392
2005	12347.5811751655
2006	12953.9782511575
2007	13637.2786224536
2008	14132.3839646281
2009	14293.8564224616
2010	15162.7359677944
2011	15751.7249249325
2012	16080.3071432935
2013	16535.4345961317
2014	16857.7150624746
2015	17121.6678789857
2016	17827.5953505863
2017	18225.9118963527
2018	18696.0085397192