It looks like Europe is getting well positioned as half of the countries are over 1% threshold and Germany, the most populated one, is really close to the 20% mainstream break point.
For the rest of the world, we can highlight US leadership (21,3%) being already mainstream and some leading countries in SouthAmerica (Peru, Ecuador & Brazil) and Asia (Malasya, Japan & Australia).
China and India will definitely change the world picture when climbing over 5%.
It is just a question of time. Meanwhile, is your Internet business or start-up getting ready ?
Source of statistics: Cisco IPv6 Stats.