Year	including construction (constant 2010 US$)
1991	30664.802617477
1992	31326.7571965368
1993	32800.4769537746
1994	34802.1655431506
1995	37070.3907308037
1996	38948.0831623858
1997	39786.0162721894
1998	43545.9744343392
1999	49266.8595398534
2000	50736.5866104846
2001	50160.1394778719
2002	49756.0650022688
2003	50047.0721383725
2004	50144.7920458005
2005	50362.2643863989
2006	49851.8270231689
2007	48126.1809224542
2008	46930.0673989918
2009	46695.2522560949
2010	45936.4513420071
2011	44322.7842982453
2012	44654.6713059317
2013	45572.5727451671
2014	45971.1115251323
2015	45974.6204178029
2016	45846.0530174752
2017	45419.5912270837
2018	46622.9955998458