Year	including construction (constant 2015 US$)
1991	26352.71286239475
1992	27285.02439012954
1993	27779.559654823475
1994	29996.09433529449
1995	31072.881583541413
1996	33578.2595132548
1997	33907.2105399478
1998	36027.101333414845
1999	39453.52919616986
2000	40201.70736336079
2001	39653.82213709356
2002	39325.62093077948
2003	39637.60455600443
2004	40341.69196982578
2005	39781.09489949502
2006	39437.09997137239
2007	38324.56423238845
2008	36864.49733926205
2009	36924.88195012759
2010	35752.362629272204
2011	34293.994143552496
2012	35155.52053973417
2013	35020.63200535019
2014	35469.58514964145
2015	35587.477893884796
2016	35928.09146324046
2017	35743.77478681082
2018	37581.717094859
2019	36758.66757120532
2020	38993.185198089064
2021	35727.17684532653
2022	32880.51422821803