The latest statistics from the International Organization for Migration show that there were 5,717,935 unaccompanied minors who were forcibly separated from their parents in 2015.
This is an increase of 1.2% compared to the previous year.
While the majority of these cases are for sexual exploitation, a small number are for child sexual exploitation.
There are also a small group of cases where the parents were found not to have informed authorities of the childrens whereabouts, according to the latest data.
According to the statistics, in 2015, 1,977,851 children were reported as unaccompanied minors and of them, 2,827,856 were taken into care.