Year	current US$
2000	2150.966257089013
2001	2223.8262599462323
2002	2403.9687242563255
2003	2728.381331557599
2004	3000.095292684803
2005	3163.527916542932
2006	3336.685663185919
2007	3621.684958904182
2008	3879.874421897088
2009	3924.5472213028193
2010	4054.77907098415
2011	4350.218356667477
2012	4356.937316450193
2013	4376.550817170716
2014	4495.359288507852
2015	4330.852835177701
2016	4457.8487702870825
2017	4604.108157969819
2018	4820.207574269062
2019	4909.410378342613
2020	5312.7554618618615
2021	5653.09512299472