Year	current US$
2000	58.89910889
2001	62.78510284
2002	68.21862793
2003	83.48031616
2004	92.04717255
2005	94.58552551
2006	111.28134918
2007	125.57421875
2008	125.53510284
2009	127.79914856
2010	142.87771606
2011	152.28347778
2012	167.49281311
2013	181.29548645
2014	181.44195557
2015	139.48536682
2016	144.32522583
2017	165.03762817
2018	178.77836609
2019	171.77171326
2020	196.26963806
2021	247.90794373