The Crimeans frequently mounted raids into the Danubian principalities, Poland-Lithuania, and Muscovy to enslave people whom they could capture; for each captive, the khan received a fixed share (savğa) of 10% or 20%.
Author and historian Brian Glyn Williams writes: Fisher estimates that in the sixteenth century the Polish-Lithuanian Commonwealth lost around 20,000 individuals a year and that from 1474 to 1694, as many as a million Commonwealth citizens were carried off into Crimean slavery [REF].