Year	including construction (constant 2015 US$)
1991	19732.250117534004
1992	19645.443688541687
1993	20018.744344889063
1994	20857.254930902152
1995	20416.310570382935
1996	21295.823797288904
1997	21830.581522444125
1998	21586.374306981186
1999	21428.43077477326
2000	21677.01543895079
2001	21326.307950250164
2002	20872.010335400762
2003	21060.041094994052
2004	21621.184392556206
2005	21779.620798553562
2006	22142.590472406213
2007	22247.27635941877
2008	22131.046464639607
2009	21429.83515750136
2010	22497.999165940495
2011	23108.086636333337
2012	22566.637133605127
2013	22840.594912332283
2014	22420.64277724868
2015	23214.090064312037
2016	22579.186227746
2017	22628.631201747838
2018	22479.574102613504
2019	21948.766047954094
2020	22051.55930218347
2021	21824.326611799963
2022	21511.50076388309