Year	including construction (constant 2015 US$)
1991	15885.645119582345
1992	15036.89755031259
1993	15640.483641984554
1994	16340.848633003017
1995	16325.90461034928
1996	16663.72716660604
1997	16892.165694800457
1998	16387.60979190558
1999	16151.421818997711
2000	16516.080925595954
2001	16066.809293971324
2002	15815.69542723563
2003	16043.46220597563
2004	16619.023805617267
2005	16296.609755376807
2006	16282.10702345179
2007	16611.428452814387
2008	16371.550438733779
2009	15866.785500179189
2010	17482.817162663436
2011	18289.30135176859
2012	17135.75505730899
2013	17354.612673472126
2014	16907.03435826075
2015	16474.442721745454
2016	17121.863866225234
2017	17321.612773550605
2018	17482.156995794987
2019	17081.77196666085
2020	18079.526079909017
2021	17691.5259939548
2022	16953.3255529714