I don't know the exact percentage, but again, with the situation locally here, it's very, very low. The decision-maker can decide to interview an applicant if they're not satisfied, if they're missing a piece of information, or if a bit of information just doesn't make sense. They'll invite the applicant or the sponsor for an interview, but it would be a single digit figure for my office, definitely.
On February 1st, 2017. See this statement in context.