People have been on the move since time immemorial.
Today, the number of international migrants worldwide stands at 258 million, about 3.4 per cent of the world's population. Nearly half of them are female.
Amongst migrants born in a developing country - 72 per cent of the global total - less than half are hosted in developed countries.
While we use statistics to speak about people on the move, we must remember that each number represents a human being - a mother, father, daughter, son, grandparent - someone just like each of us. The images on display here capture but a moment in time - over the last seven decades - of the millions that have, for one reason or another, become people on the move.