Year	including construction (constant 2015 US$)
1999	48156102618.14735
2000	50122610094.85326
2001	50129461984.64088
2002	52033928653.87291
2003	55976377932.58254
2004	58814626969.042595
2005	62319550979.944725
2006	62586824161.464554
2007	63673665692.60008
2008	63707569819.66409
2009	60248819579.11641
2010	62366195663.54265
2011	62563399106.38792
2012	61175611065.434944
2013	59349457873.63488
2014	61034241535.01204
2015	61416426559.3479
2016	66523007255.2449
2017	68807602088.62312
2018	68380474621.455345
2019	67737733940.05323
2020	62733557572.34933
2021	68699966493.78163
2022	70625159869.36691
2023	73266478859.59525