Year	current US$
2005	8.5786761309818
2006	10.358045257427078
2007	9.051512560996127
2008	13.345744589913323
2009	14.21656059369788
2010	14.315226004612896
2011	17.020271494605357
2012	16.93361275334004
2013	17.382855770490355
2014	31.00846306717805
2015	32.08844387784406
2016	33.82281549146508
2017	26.306597454964773
2018	27.370641675604418
2019	25.175769297051307
2020	52.87692444993654
2021	50.503791331970596
2022	756.1165707236842