Year	including construction (constant 2010 US$)
1991	24275.662728053
1992	22759.5943320892
1993	23779.1403145686
1994	24933.1113106364
1995	25620.8213081371
1996	25464.9019022303
1997	25849.745340714
1998	25029.9893352349
1999	24641.5149392747
2000	25268.99328232
2001	24728.571154576
2002	24214.2086260917
2003	24419.1794548556
2004	25391.208441025
2005	24760.8814216793
2006	24605.8186975773
2007	25184.7613544338
2008	24694.806154142
2009	24109.3436912019
2010	26587.9126810756
2011	27796.9835411034
2012	25582.2868006176
2013	26056.6498444396
2014	24952.2433784844
2015	23954.5648957615
2016	24804.0983961201
2017	24992.7201368599
2018	24803.1906484646