Switzerland is the world leader in terms of expansion to IPv6. Contrary to the assumption that IPv6 is currently taking the Asian market in stride, the overall rankings in terms of requests to the google server for IPv6 paint quite a different picture. Switzerland leads, closely followed by Rumania, and then France.
The Google statistic is is projected on an ongoing basis, and shows that adoption of IPv6 is common in many countries, but is also cause for substantial problems. Switzerland's excellent position is however also confirmed by Cisco.