Year	US Dollars
2005	6.00274
2006	7.78351
2007	8.9353
2008	11.66459
2009	10.33396
2010	14.3676
2011	12.66165
2012	10.88936
2013	11.34572
2014	12.76497
2015	11.05371
2016	-2.35602
2017	-26.44786
2018	12.62557
2019	22.49633
2020	88.03883
2021	-27.9159