Year	including construction (constant 2010 US$)
1990	52236587346.9425
1991	50810880059.5503
1992	39165259073.3237
1993	32787389521.633
1994	24400426327.951
1995	20929351123.7184
1996	20352414918.3114
1997	21275145877.635
1998	21189925546.4005
1999	21911059883.5719
2000	25261728828.3041
2001	29153499803.1106
2002	32657529202.1329
2003	35670965143.3561
2004	39684185334.2505
2005	43918305939.3883
2006	49786650796.1968
2007	53760984264.7252
2008	55127962956.015
2009	55961040293.2994
2010	60110809270.13
2011	62199563209.2264
2012	63379908998.7115
2013	65361000101.1504
2014	66510759788.2289
2015	66580426294.9458
2016	67719251859.594
2017	71985592198.655
2018	74989097535.6587