Year	including construction (constant 2010 US$)
1991	10118.1719379707
1992	9770.54094162552
1993	9730.32954270528
1994	9724.71646456867
1995	9808.0799725472
1996	9936.30169528314
1997	10436.6998837598
1998	10753.0048650954
1999	11202.7442687324
2000	11830.2620885276
2001	12177.7275025185
2002	12641.1755660369
2003	13236.5207673355
2004	13948.7558528731
2005	14440.3944654612
2006	15197.0243355326
2007	16179.9504346492
2008	16934.4780890278
2009	17240.6761328926
2010	18528.611079339
2011	19503.308440059
2012	20090.7017474177
2013	20684.2325758149
2014	21083.6344933532
2015	21469.3172692974
2016	22519.4545163892
2017	23426.6139053757
2018	24406.3660675612