Year	including construction (constant 2015 US$)
1991	12353.323968772038
1992	14421.36088785016
1993	14205.006566189564
1994	13945.380029865175
1995	14325.23906233951
1996	13416.956393248573
1997	14560.987395791672
1998	14969.582116136171
1999	14784.686345407197
2000	16882.867685853224
2001	18197.9160268509
2002	19216.511330317506
2003	19539.336397920404
2004	18788.7183065675
2005	17334.006422321996
2006	17832.391312486077
2007	17855.741087544662
2008	18216.0536617382
2009	18082.474594317177
2010	16779.645902964014
2011	18573.92876726798
2012	17681.964982079306
2013	18184.43615173278
2014	18151.91322533274
2015	18112.913811825387
2016	17693.45777124194
2017	17560.963018889048
2018	18390.045602421276
2019	17927.489406191093
2020	18030.166469996533
2021	16914.497438487448
2022	17231.212764019354