Year	including construction (constant 2015 US$)
1991	11022.762611592621
1992	9926.258068273353
1993	9567.743667248176
1994	7897.106224788752
1995	8373.26384983204
1996	8928.840607333672
1997	9699.516948258408
1998	10415.559548627305
1999	10226.25911744053
2000	10781.998878966078
2001	10533.870243898114
2002	11150.221252354695
2003	11961.297060745066
2004	13065.122187619821
2005	13773.283569651334
2006	15046.57908288716
2007	15959.658249975977
2008	15892.545958568824
2009	14882.119770597554
2010	15671.749731590246
2011	16888.143524995503
2012	17225.04660525345
2013	18204.367066743045
2014	18302.022241435312
2015	19209.789041920838
2016	19296.339783630658
2017	20460.233686373147
2018	20412.3735255579
2019	20782.985840911824
2020	21288.85205501282
2021	22129.650582709473
2022	25242.74294998534