Year	including construction (constant 2015 US$)
1991	19857.92405910796
1992	19864.97581589611
1993	20267.00212785766
1994	21116.627409830242
1995	20661.271757775772
1996	21531.65338600761
1997	22052.597777357405
1998	21810.8130857092
1999	21643.81282372268
2000	21881.317659989465
2001	21479.447412914535
2002	21016.247670911736
2003	21210.927275347996
2004	21760.305030385847
2005	21895.667321632594
2006	22205.087009537012
2007	22307.186467074047
2008	22175.035508458255
2009	21459.04083138901
2010	22529.140761328123
2011	23148.08876795178
2012	22624.085142992644
2013	22852.255995496613
2014	22429.834673073605
2015	22315.03789668377
2016	22573.290108906414
2017	22620.22111035524
2018	22462.955079062787
2019	21935.56345103424
2020	22045.657315116598
2021	21848.435100506453
2022	21562.29656519324