Year	constant 2015 US$
1995	7100.306328990409
1996	7270.032843431772
1997	7456.888445680191
1998	7610.137798661083
1999	7776.382291068005
2000	7998.17625459847
2001	8065.136118972565
2002	8125.514226534072
2003	8251.083568193571
2004	8486.962359920934
2005	8690.179996592691
2006	8962.689636720766
2007	9182.979140707694
2008	9146.8905975787
2009	8981.79536779143
2010	9269.573155888767
2011	9481.621155976767
2012	9626.635039916293
2013	9758.960649771665
2014	9972.39880009129
2015	10179.462432123191
2016	10335.74587180051
2017	10585.369945269822
2018	10790.106056437799
2019	10973.334777618331
2020	10530.004985804107
2021	11115.93319643159
2022	11309.728094870576