Year	current international $
2000	39.1977242531838
2001	37.5512150673172
2002	36.9410823871474
2003	39.3809377066096
2004	36.8032272104848
2005	36.7141189546239
2006	37.3159212821452
2007	38.5393553400176
2008	39.2983180317868
2009	39.112010302732
2010	40.6621712548263
2011	43.9050256847208
2012	44.3332592999105
2013	44.5216004852101
2014	42.1202303356077
2015	50.5892179270476
2016	52.9401064147355
2017	55.2867699647232
2018	54.9018631862929
2019	49.3543397632201
2020	47.1628620934031
2021	47.7556778471102