Year	current US$
2000	225.38846009960557
2001	229.9312196347402
2002	256.25195351158465
2003	322.3074587069679
2004	378.151753200892
2005	392.76968529875717
2006	425.47335371955955
2007	484.5830059051734
2008	553.6944995364872
2009	525.3115225771164
2010	517.326576195423
2011	565.0516444486003
2012	533.0422110700418
2013	555.0220980346576
2014	564.7536036548497
2015	486.47478188000275
2016	491.5024624777573
2017	520.7583085509516
2018	558.396308212387
2019	549.9663050638059
2020	540.5337919385178
2021	613.0959853799191