You will find more statistics at Statista
Democratic watchdog organization Freedom House recently released its annual rankings of the world's most suppressed nations, finding that global freedom is under pressure. A plethora of crises in 2015 led to harsh crackdowns on dissent by authoritarian regimes around the world as well as increased levels of xenophobia in democratic countries.
Freedom House found that global freedom has declined for the tenth year in a row. 72 countries experienced a decline in freedom while only 43 made gains. In 2016, 40% of the world's population is considered free with 24% partly free and 36% not free.
For more details, see https://freedomhouse.org/report/freedom-world/freedom-world-2015#.VsNiWFgrKM8
Elaine Martin has been practising US and global immigration law since 1997. She is an immigrant herself (from Ireland), so has a special understanding of the legal and emotional challenges involved in relocating to a new country.