Year	current US$
2000	323.33295447883404
2001	324.4021707536331
2002	369.35302052331355
2003	429.11159988303143
2004	492.92311051452873
2005	544.6102490429464
2006	573.4282693123034
2007	673.1510566351
2008	748.6491410335567
2009	705.4633547064643
2010	711.2123910134926
2011	750.9429730917471
2012	734.02252266757
2013	779.852163312522
2014	815.2301663475683
2015	758.8004253796782
2016	795.7936334466139
2017	858.6417779091853
2018	921.9773496563446
2019	932.4666562527369
2020	982.6384990619267
2021	1142.713952583694