Year	including construction (constant 2015 US$)
2006	58088.67755374622
2007	54594.05707477051
2008	50521.28225829655
2009	46457.87670117608
2010	44128.413055631296
2011	46035.91113732411
2012	44523.02284689596
2013	46806.6430455783
2014	47511.21406316953
2015	46968.607084564246
2016	46158.80455917251
2017	44425.28555273682
2018	43507.20775095775
2019	44480.62020790589
2020	45728.20143171696
2021	46066.804367409786
2022	46182.91608122921