Year	including construction (constant 2015 US$)
1991	18379.47372825843
1992	18961.602028843805
1993	17334.498003719782
1994	15942.480514462246
1995	15109.68623585856
1996	15495.225092776816
1997	15363.416846853497
1998	15079.673895451211
1999	14149.264094230335
2000	14742.487969894939
2001	15029.290112610712
2002	14414.094422769409
2003	15607.100996872541
2004	15385.85618108039
2005	15767.807391558645
2006	15540.476494708333
2007	15243.35023735812
2008	14867.41539053386
2009	15127.348418892483
2010	15698.66034074051
2011	16750.64044514368
2012	15633.564606495922
2013	14530.4783639878
2014	14621.135592450226
2015	13652.915790846622
2016	12009.620464817614
2017	11696.269573054833
2018	11304.704727600158
2019	10968.019988894392
2020	9885.85593928016
2021	9326.264536502516
2022	8389.317909026084