Today is a rather ordinary survey, a regular look by NTT Com Research (ex-goo Research) into electronic cash, their fourth regular survey into this topic.
Between the 11th and 17th of March 2015 1,065 members of the NTT Com Research monito group completed a private, internet-based questionnaire. 53.6% of the sample were male, 2.2% in their teens, 27.3% in their twenties, 21.8% in their thirties, 16.9% in their forties, and 31.8% aged fifty or older.
I have a bit of confusion over the numbers here; there is a clear statement that from the 1,065 in the sampe, 336 were non-users of electronic cash, a figure backed up by the sample size for Q2. However, this means 31.5% were non-users (this percentage is also mentioned in the text), but in Q1 it is 28.0% from the full sample that say they are currently non-users.
Instead of a graph, here is Hello Kitty dressed up as the duck-billed platypus mascot for Osaka area JR railway IC card.ntt com research