Year	current US$
2002	2862.9702133009555
2003	3640.573153122654
2004	4120.31374631692
2005	5584.391051927669
2006	7058.646985048035
2007	8280.865090475445
2008	9809.540093479178
2009	7201.214609071929
2010	8548.375002772325
2011	6730.278838981553
2012	11144.717745383476
2013	9656.69694002584
2014	8094.59372773661
2015	7013.990221292587
2016	7078.623401320796
2017	9226.109245338674
2018	9974.294571076862
2019	8909.484506898385
2020	6770.950965136877
2021	4913.905563215366