Year	current international $
2000	548.931046566225
2001	640.60623115606
2002	713.187535655239
2003	758.995293581685
2004	750.019191294757
2005	1070.92946864909
2006	1291.47154316706
2007	1839.72360969976
2008	1968.03720323393
2009	2181.36968365444
2010	2029.87184361724
2011	2158.66146339222
2012	1879.45075252845
2013	2221.22943380493
2014	2700.48626704638
2015	3176.12184740397
2016	2492.10939811466
2017	2466.84571966443
2018	2484.06821613305
2019	2552.08307609835
2020	2594.51824949427
2021	3033.18723165667