Year	current US$
2000	40.80180368
2001	46.55988068
2002	49.8944337
2003	54.23310346
2004	61.83812739
2005	66.55158745
2006	73.71834744
2007	88.06810749
2008	88.77756855
2009	88.84178329
2010	91.41670608
2011	90.72291179
2012	95.75797595
2013	96.98571256
2014	102.40356901
2015	101.98280774
2016	103.74662595
2017	107.72374785
2018	109.37955342
2019	103.75668763
2020	108.15295156
2021	117.42727987