Year	including construction (constant 2010 US$)
1991	3294.10809294988
1992	3439.82996105941
1993	3238.16219938509
1994	2591.61726688893
1995	2631.95645669524
1996	2713.51361469913
1997	2691.67699031192
1998	2631.79691928052
1999	2561.09515103158
2000	2647.63966985121
2001	2711.60088424501
2002	2644.58002028442
2003	2562.836425575
2004	2553.26871425132
2005	2595.12704139064
2006	2582.24821604578
2007	2491.48014068075
2008	2283.49716088943
2009	2241.92003414721
2010	2268.15128118958
2011	2224.67315143003
2012	2231.52877131821
2013	2320.53416297112
2014	2378.64321763424
2015	2493.31639837902
2016	2480.00650897711
2017	2627.93149619639
2018	2675.94246954627