Year	including construction (constant 2010 US$)
1991	17148.6644849854
1992	14404.8008821672
1993	13257.9562342226
1994	11595.9760567968
1995	12226.8376794186
1996	12077.2242791729
1997	12997.5174638416
1998	13345.3828975312
1999	13693.5361056605
2000	14673.4064351569
2001	14885.4352703686
2002	15392.2044200905
2003	16499.1357967474
2004	17972.4537000726
2005	18662.8943341968
2006	19910.7998555607
2007	20734.0481846944
2008	21147.1507867609
2009	20542.8067829425
2010	21536.8623264195
2011	22990.5911494698
2012	23140.1899532087
2013	23620.1560720695
2014	23443.0128515372
2015	23890.8977825067
2016	24335.4253512187
2017	24245.0504298993
2018	24801.2772250484