Yani wewe you can pick Mundi and cia fact book without verifying data!

CIA fact world book in several occasions they use estimates za many years back, kama ya Gabon 44 ni 2011 estimates, ya Nigeria is from two years ago., now they are not 70, but 80 plus!!., open specific country's profile on CIA world facts book, ujionee their un-updated data estimates on several areas like, poverty, GDP, population, they even use 2011 to 2014 estimates, uzuri wanasema, they indicate in brackets, check it out man. Thus mundi are not the best source for data. Data iko na world bank and IMF, latest report.
Hiyo no EXPIRED REPORT, last updated January 2018, and without up to date information from all countries. Pole, Check CIA world fact book! The main source of data for Mundi.
If this were your thesis report ungeanguka mtihani vibaya!