Year	current US$
2000	88.66069192217238
2001	90.58610540746346
2002	98.91935257982503
2003	111.89174261882506
2004	127.809920537631
2005	138.76558448809774
2006	146.29541457778373
2007	170.30799099835562
2008	197.99489439526891
2009	187.6767726763143
2010	181.75837813016165
2011	191.02404039802315
2012	187.10051058075123
2013	198.9542063961781
2014	210.88024363718995
2015	192.94674163288144
2016	199.64824901930353
2017	218.39452083656087
2018	230.89585952900705
2019	219.1521202870339
2020	188.41555051668934
2021	172.1150934921316