According to RIPE and NRO only 9% of the useable IPv4 address spaces are available.
This means that outage of the IPv4 addresses will be the fact in some region faster than others e.g. Asia Pacific have a real shortage by this summer while others could have some more IPv4 addresses available by latest end of next summer. So it is still not very late for the transition to IPv6!
The following graph shows that there are 24 of useable /8 IPv4 are available. For full size please click on the following graph.