"Latest figures from IDMC estimate that more than 19.3 million people were forced to flee their homes by disasters in 100 countries in 2014. Hundreds of thousands more are still displaced following disasters in previous years. Since 2008, an average of 26.4 million people per year have been displaced from their homes by disasters brought on by natural hazards. This is the equivalent to one person being displaced every second. The number and scale of huge disasters creates significant fluctuation from year to year in the total number of people displaced, while the trend over decades is on the rise."
The report, dataset, press releases, infographics and more are all available here.
All previous editions can be accessed via my research guide.