Year	current US$
2000	3704.527108658252
2001	3812.322434646882
2002	4085.478446679391
2003	4984.879583709848
2004	5813.741323923919
2005	6404.424415350421
2006	7125.141208468964
2007	8398.427864398183
2008	9506.911351344408
2009	8300.575755924558
2010	8583.633595982605
2011	9484.438295768967
2012	9639.859511373857
2013	10045.440816892642
2014	10195.709581090898
2015	9356.524079389963
2016	9755.90365874966
2017	10669.05760301295
2018	11229.219435555668
2019	11280.05166513735
2020	10120.1948826401
2021	11279.440494461971