Year	including construction (constant 2010 US$)
1991	11583.0510418739
1992	10156.0863516837
1993	8991.14289892322
1994	8535.74185948772
1995	7965.53405728914
1996	7686.65876367318
1997	7312.30673569238
1998	7656.9919964406
1999	7993.11451196915
2000	7943.55260549181
2001	7773.68747758425
2002	7920.22026272105
2003	7496.79962288524
2004	7141.86126202677
2005	7781.75439949198
2006	7766.16006712899
2007	7605.61803704667
2008	7512.48456720287
2009	7271.91598639823
2010	6947.78294130918
2011	6759.41748196634
2012	6628.93023089477
2013	6637.0156484652
2014	6543.73571590879
2015	6947.28227489638
2016	6964.71503406741
2017	6836.13377477814
2018	6867.04909510259