Year	including construction (constant 2010 US$)
1991	4031.40043900809
1992	3874.74781404156
1993	3747.7413350234
1994	3690.83686519635
1995	3705.88055842233
1996	3717.6772863546
1997	3649.0500576697
1998	3541.69250073353
1999	3341.71150016478
2000	3640.2247943964
2001	4298.88227299792
2002	4923.45008043184
2003	5765.10669225302
2004	6500.15129795789
2005	7295.67640994619
2006	7387.48295157333
2007	7466.65713506329
2008	7279.57048071536
2009	7306.30529677082
2010	7483.13012790046
2011	7681.19272291312
2012	7696.86414398587
2013	7778.97484163073
2014	7849.04777069813
2015	8033.38537921298
2016	8111.52852892658
2017	8061.52159138664
2018	8151.48444806808