Year	including construction (constant 2010 US$)
1991	20559.7253184498
1992	19686.4986356496
1993	19447.2567402284
1994	21562.2619079358
1995	21175.2258794706
1996	5852.9247160603
1997	5920.51285715109
1998	6870.19983140153
1999	6948.9732168137
2000	8354.45844762766
2001	9031.74661945551
2002	9536.85845955835
2003	10065.3827320822
2004	9902.5686150538
2005	9966.74530731195
2006	10324.915068571
2007	10832.3591806807
2008	10810.1606121648
2009	11165.4281557332
2010	11918.9734832498
2011	13482.3221577143
2012	13617.8112663684
2013	14203.473309795
2014	14362.7424520872
2015	14712.035451992
2016	15407.4941196033
2017	15304.9905441356
2018	15577.9444009866