A slight word of caution before looking at these figures. In comparing this year to last, it has to be remembered that the sample size of the survey increased to reflect our changing population. In the 2011-3 survey, the estimated universe was 3.511m whereas the estimated universe in the latest survey (2012-3) is 3.608m and extra 97,000 listening people. This has a tendency to slightly confuse the comparisons at times. Stations may have the same number of listeners, in volume terms, but could have declined in their percentage reach– all simple mathematics.