Tanzania
Custom
Year
Value
2018
7.4649488397648
2017
9.7449788560477
2016
9.6539125514344
2015
7.9157105561806
2014
7.6765933675199
2013
7.4717586338247
2012
7.665686995919
2011
8.4868430759732
2010
8.2882739675672
2009
8.2882739675672