Year	constant 2015 US$
1995	7306.3070651815715
1996	7855.139990852079
1997	8380.537174538878
1998	8574.111379057105
1999	8367.93708989974
2000	8724.529221820396
2001	9325.362520080349
2002	9896.871660391924
2003	10284.483506484785
2004	10876.190238775303
2005	11251.764030896995
2006	11795.41792235523
2007	12430.539586815257
2008	12554.087875748817
2009	11606.30357112499
2010	11524.611319323994
2011	11582.534692886702
2012	11341.307969413088
2013	11508.295110869069
2014	11566.995672387926
2015	12200.711828842355
2016	12443.172700317466
2017	13206.90440026012
2018	13689.365280365482
2019	14281.17479446181
2020	13422.013532466923
2021	15523.908813946058
2022	16752.74410484534
2023	17249.66153291471