Year	including construction (constant 2010 US$)
1991	8799.42007964707
1992	8568.32575118444
1993	8512.16120463315
1994	8448.68869177782
1995	8715.98181779209
1996	8883.11526695153
1997	9215.47995195452
1998	9387.09021246705
1999	9627.17849150707
2000	10033.235871343
2001	10177.332535362
2002	10481.6758903219
2003	10865.7829607321
2004	11315.9432946137
2005	11628.1987936724
2006	12129.4705108077
2007	12728.6723429313
2008	13148.7049245607
2009	13246.2388819746
2010	13996.130595854
2011	14505.2527913741
2012	14762.768981977
2013	15148.2895632364
2014	15419.6023661837
2015	15568.8646764132
2016	16150.9740529474
2017	16471.6693376408
2018	16941.2606795344