The amount of displaced people and refugees due to forced migration has followed what trend in the last decade?

Question

Responses

It will create an additional nearly 150 million displacements.
It has remained at the same level of 40 million.
It has doubled from 40 to 80 million.
It has gone down by half, from 80 to 40 million.

Answer 1

It has doubled from 40 to 80 million.