Year	current US$
2000	50.68673547024183
2001	50.0990443020775
2002	51.73751680912808
2003	56.2372491035321
2004	65.07490202954062
2005	76.4484331502015
2006	88.08240754935751
2007	105.23257548982825
2008	127.07875655958438
2009	129.8971471295286
2010	146.88939526171438
2011	172.42543290452988
2012	181.57655709043235
2013	195.10568789813283
2014	202.59738504012842
2015	187.2532633779089
2016	194.39914793604856
2017	225.30217346744564
2018	242.995029087958
2019	254.3664566456448
2020	254.83610223845648
2021	292.6917161578048