Year	constant 2015 US$
1995	6795.594527348384
1996	7215.649220511723
1997	7193.256374270501
1998	7303.364032705882
1999	7409.006850079731
2000	6318.478264983724
2001	6367.294261853961
2002	6487.100235588516
2003	5983.093433259826
2004	6162.174199405154
2005	6083.817204654459
2006	6052.071683325956
2007	5992.694393756292
2008	6043.269324021083
2009	6190.518543302684
2010	6161.971577322633
2011	6190.664358595877
2012	6432.220856402763
2013	6480.353073365316
2014	6620.831747610734
2015	6675.2984502669005
2016	6550.81883867966
2017	6779.551444922238
2018	6989.260228274924
2019	7361.8426762589015
2020	7593.71787506577
2021	7628.912466280643
2022	7693.347305766844