Year	current international $
2000	242.747268205989
2001	259.406542094439
2002	270.519491242088
2003	270.70771910004
2004	281.196986940794
2005	300.258293270172
2006	332.527927263138
2007	394.219167936845
2008	412.333103093438
2009	374.005110046864
2010	380.601693201965
2011	405.125165245321
2012	401.644028764966
2013	451.268822438504
2014	476.775245387594
2015	490.538345477403
2016	511.006693515444
2017	500.934156458739
2018	506.035413325257
2019	545.053534278436
2020	480.068722247576
2021	604.335744542217