Year	current US$
2000	62.15243912
2001	57.19501495
2002	69.73505402
2003	76.2408905
2004	83.09568024
2005	90.88136292
2006	103.64756012
2007	125.62582397
2008	149.71322632
2009	150.35655212
2010	169.38200378
2011	192.56607056
2012	202.52087402
2013	208.60844421
2014	214.52433777
2015	219.91911316
2016	230.60774231
2017	247.99453735
2018	275.67111206
2019	289.17828369
2020	305.08792114
2021	364.36968994