Year	including construction (constant 2015 US$)
1991	5011.179450127947
1992	4863.258900459965
1993	4737.0148088280675
1994	4671.186374888353
1995	4683.115160525475
1996	4687.13790860073
1997	4638.221142510914
1998	4528.427628775538
1999	4314.34675119473
2000	4139.442483580708
2001	4243.002659055424
2002	4240.515339957188
2003	4363.727137874448
2004	4365.564305583874
2005	4365.264866906985
2006	4433.6602819028885
2007	4496.695114868708
2008	4376.683006655714
2009	4376.302929955812
2010	4524.752844605108
2011	4670.317720782758
2012	4718.1913923033735
2013	4783.91922889024
2014	4850.136049963023
2015	4807.509794806323
2016	4701.6698408819375
2017	4660.486937331217
2018	4638.619293985363
2019	4643.906140998471
2020	4649.229474359621
2021	4737.030732097769
2022	4775.754669371649