Venezuelan refugee crisis
The UN predicts that over five million Venezuelans, over 15% of the nation's population, will have left the country by the end of 2019 since the start of the crisis in Venezuela—the total at the end of 2018 was 3.3 million. One million have left the country since November, with a daily average of 5,000 departures. Additionally, over 20% of all worldwide UN asylum requests are from Venezuelans; 350,000 applied in 2018 alone.
Sources: Financial Times