Year	current US$
2000	310.61404419
2001	268.64971924
2002	245.66194153
2003	250.3089447
2004	294.3838501
2005	383.5508728
2006	483.91915894
2007	600.63568115
2008	705.13397217
2009	719.42651367
2010	893.77508545
2011	1028.0847168
2012	953.703125
2013	977.81689453
2014	1013.56842041
2015	782.52294922
2016	795.93798828
2017	937.34289551
2018	863.28173828
2019	850.43286133
2020	704.99536133
2021	761.26776123