Year	including construction (constant 2010 US$)
1991	4327.47027076369
1992	2609.96790631286
1993	2750.07848967761
1994	2942.68947753795
1995	3414.66750807731
1996	4702.32839132292
1997	3830.4009928378
1998	4490.34060376957
1999	5481.56365776543
2000	6701.23926181076
2001	8107.55164101077
2002	8670.47056598833
2003	10160.6402526571
2004	11156.3282820905
2005	12185.250735596
2006	13485.1309425799
2007	14270.2646997065
2008	14678.265764825
2009	13509.0068013167
2010	13713.1517827388
2011	14660.9953183366
2012	14404.9371317189
2013	16550.2609018063
2014	15410.7163786454
2015	14205.1910418643
2016	13899.1479356139
2017	13634.7922147202
2018	14874.074419482