Year	current US$
1995	2329.576732525517
1996	2431.7089996161617
1997	2683.2413681236967
1998	2973.5348425268076
1999	3151.5770181735443
2000	3361.6408688027504
2001	3578.001900413506
2002	4136.933296889507
2003	5145.19523190241
2004	6378.666520571151
2005	7594.902384313617
2006	9723.446901747788
2007	14113.52912773267
2008	16467.14368794046
2009	12331.928552408934
2010	11420.994003283575
2011	13338.96223508517
2012	13847.33793931943
2013	15007.4918561719
2014	15742.391338190771
2015	13786.45679531137
2016	14331.751588504894
2017	15695.11515410587
2018	17865.031094764225
2019	17883.349411321666
2020	18096.202707339373
2021	20930.398237418864
2022	21508.400333216694
2023	23184.311668014907