Year	including construction (constant 2015 US$)
1991	30581.168578007302
1992	23867.341741450316
1993	20305.522470099055
1994	16556.509754090228
1995	15248.30335718825
1996	15530.087760847904
1997	16556.400073787572
1998	16849.72697441034
1999	17666.87654434887
2000	20146.4397722692
2001	22494.439835781806
2002	24740.711973224716
2003	25476.414883279034
2004	27113.456910470715
2005	28621.40846398343
2006	30994.904665641527
2007	31682.94325851201
2008	31355.87814918608
2009	31764.02846005037
2010	33379.13533783591
2011	33669.40233542705
2012	33308.475581593404
2013	33339.844995428204
2014	33351.25481700296
2015	32269.59331102851
2016	32395.8845312947
2017	34150.30968266353
2018	35172.19475958991
2019	37221.184869330216
2020	38187.12475865126
2021	38867.6742518233
2022	39801.10114281333