Israeli officials are reluctant to confirm figures, but data obtained by the Jerusalem Institute for Israel Studies indicates a jump over the past decade, rising from 114 applications in 2003 to between 800 and 1,000 a year now, around half of which are successful. On top of that, hundreds have made inquiries before the formal application process begins.

Interior Ministry figures obtained by Reuters show there were 1,434 applications in 2012-13, of which 189 were approved, 1,061 are still being processed and 169 were rejected. The remainder are in limbo.