''As of 2014, IPv4 still carried more than 99% of worldwide Internet traffic.[73][74] The internet exchange in Amsterdam is the only big exchange which publicly shows the IPv6 traffic percentage, which as of November 2015 is tracking at about 1.3%, growing at about 0.5 percentage points per year.[75] As of 31 December 2015[update], the percentage of users reaching Google services with IPv6 reached 10.0% for the first time, growing at about 4.3 percentage points per year, although varying widely by region.[76] As of 18 April 2015[update] Deployment of IPv6 on web servers also varied widely, with over half of web pages available via IPv6 in many regions, with about 16% of web servers supporting IPv6.[77]''

fyi

https://www.google.com/intl/en/ipv6/

e