What proportion of users leave the setting at Settings -> Bluetooth on?

iOS has two switches for Bluetooth, each controlling semi-independent settings. One is in Control Center and affects connections to Bluetooth peripherals. The other is meant to be less visible and less-frequently toggled. It is found in Settings -> Bluetooth, and controls the Bluetooth "radio", also superseding the previous setting if turned off. I need data about the latter setting, in Settings -> Bluetooth. What proportion of iOS users leave it turned on? We're developing a feature using iBeacons and need it to be on for the feature to work.