Year	current international $
2000	2.3700267663466024
2001	2.589089485081231
2002	2.881718555011191
2003	3.463925079821154
2004	4.6379879232111945
2005	4.999622777865803
2006	5.309908505659248
2007	5.544541000858329
2008	5.694596164843129
2009	6.154452608727133
2010	6.277125013793947
2011	6.891665497639637
2012	6.834303491946334
2013	7.3975949351993755
2014	7.539678945243541
2015	6.828695045572235
2016	7.06224783312024
2017	7.029555436563946
2018	6.988628367540412
2019	7.6441233123967285
2020	7.359190872825449
2021	11.452804390351544