Year	current US$
2000	36.61997763172475
2001	36.90420335955746
2002	36.17765274495772
2003	39.80017694059724
2004	45.34203677366113
2005	52.71611964435484
2006	59.18356219359652
2007	69.29697321886374
2008	79.66516367409345
2009	78.98067082837413
2010	90.44380766130797
2011	102.95080463173169
2012	107.70388535134289
2013	114.14822509696842
2014	114.78090267404693
2015	108.23078735835668
2016	109.5088873491941
2017	119.46175036444217
2018	125.19663407136501
2019	128.3843796881121
2020	126.63514883873611
2021	144.6363227009522