Year	including construction (constant 2015 US$)
1991	18036.248018665603
1992	14558.008727589966
1993	13315.242505046108
1994	11476.001880781138
1995	11393.324821186146
1996	11116.472348573272
1997	11863.227040653916
1998	11903.476502691366
1999	12310.897748527492
2000	13247.336718996938
2001	13554.244098872352
2002	13738.190593458481
2003	15033.529941635352
2004	16570.069711121734
2005	17247.979934505147
2006	18137.01997855062
2007	18606.84746337393
2008	18960.111991671634
2009	18102.446041056322
2010	18957.48107831655
2011	20139.817726774887
2012	20414.99394771932
2013	20595.88339983971
2014	20741.24673883458
2015	20989.331055299666
2016	21490.78222006106
2017	21927.25007634183
2018	22622.967277078635
2019	23170.20951756908
2020	23187.886062877616
2021	23961.199163591624
2022	23830.12756052292