how much routed IP is PI?

Does anyone have a ballpark figure for how much of what's currently in the routing table is "provider independent"? Are there systematic variations in PI IP availability between ARIN, RIPE, and APNIC?

thanks,

Tom

At least for RIPE (not sure about the others) you could ftp down a copy of the
inetnum db and using a script cross reference to a bgp table .. should be easy
enough..

Steve