Year	current US$
2000	111.61015752639433
2001	113.52404251328235
2002	125.80791547054287
2003	148.50171956672747
2004	173.85380510583548
2005	188.69132490897067
2006	197.3513852414166
2007	230.8946797112814
2008	273.1696827109386
2009	258.2392369500595
2010	255.49362341557347
2011	264.91580768388
2012	256.69398279932796
2013	273.7494925345697
2014	291.79470771806757
2015	267.36042703455144
2016	281.7280413310703
2017	309.9118183030081
2018	326.15112094804437
2019	306.71165518157164
2020	261.34424200217614
2021	267.6855530234147