Year	including construction (constant 2015 US$)
2000	20191773422.32944
2001	20191773422.32944
2002	19429642742.47586
2003	18807659214.488434
2004	17924996762.537712
2005	17591129699.583405
2006	17343631126.770977
2007	16973463469.10426
2008	16943798385.886301
2009	17187615407.033905
2010	16379850385.566984
2011	17632466004.541985
2012	19195650251.931686
2013	20032504611.546894
2014	20332677096.24866
2015	21836488534.84697
2016	22362865809.11477
2017	23039139871.83311
2018	22889784029.020638
2019	23446607345.49541
2020	21946427666.564053
2021	19487290536.7542
2022	20472478424.350044