Year	including construction (constant 2010 US$)
1991	35023.7317039077
1992	35875.2733896738
1993	35297.6154505009
1994	37704.7732203229
1995	34345.0975121938
1996	35115.2318964959
1997	36030.1254629493
1998	33718.7733369004
1999	32539.8063572753
2000	31611.2019753444
2001	31691.1146867586
2002	31833.9354485604
2003	32089.0508132753
2004	32285.434075933
2005	30843.222441896
2006	30780.3159649258
2007	30348.7832575952
2008	30302.0599472872
2009	29374.8926524094
2010	30023.5037264507
2011	30337.0398436136
2012	30491.142856704
2013	29689.6920879032
2014	29577.8366826084
2015	28811.8002527852
2016	27703.9905031813
2017	26834.914564876
2018	26465.5857551811