Year	including construction (constant 2015 US$)
1991	21886.14375776264
1992	19332.861771786942
1993	20419.32917296698
1994	19797.932159426535
1995	19565.939712260515
1996	19462.792147004355
1997	20093.2683459209
1998	20907.988894238664
1999	22210.96233042608
2000	21941.19315128526
2001	19206.864183604637
2002	18752.15304974232
2003	19284.626545022136
2004	19422.50371299903
2005	20043.807461282486
2006	20577.74690438862
2007	21059.950510924544
2008	23488.416921994132
2009	23492.010267218415
2010	25777.33075509612
2011	29609.636094179394
2012	34960.02671599253
2013	35972.72919069507
2014	39430.18603426245
2015	45918.18528402384
2016	48788.06265606405
2017	51373.218366329034
2018	49931.66165220253
2019	52246.58384248009
2020	37857.1967109767
2021	49836.696978449
2022	53759.925007037105