Year	current US$
2000	174.12957711139717
2001	172.43994823342894
2002	195.78703187734362
2003	225.61242465021817
2004	254.8857351723176
2005	283.04995726326894
2006	297.54060350691327
2007	347.0942385827739
2008	373.18727911060796
2009	354.80620940649595
2010	359.0416756133686
2011	382.1207662058663
2012	382.24952653904626
2013	403.4528544363782
2014	416.7501005299411
2015	399.1434640958451
2016	419.9479988977382
2017	453.99494987427113
2018	488.3219156812894
2019	515.8889694570049
2020	586.3507879685375
2021	686.3554167436151