Korea's youth the most "digitally native" in the world

The 2013 edition of Measuring the Information Society has been published by the ITU, and it contains an interesting new section on "digital natives."  The UN study uses the following definition.   "A digital native is defined as a youth, aged 15-24 inclusive, with five years or more experience using the internet."  Using this measure, 99.6 percent of South Korea's youth are digital natives, almost the same as Japan with 99.5 percent.  Several Scandinavian countries and Finland also ranked high and 95.6 percent of the youth in the United States are digital natives.
The accompanying graphic shows where digital natives are most concentrated in countries around the world (click to see a full size version).  The map is shaded according to a measure of digital natives as a percentage of the total population.  On this measure, South Korea ranked third in the world.