Majority of AIC dividend heroes deliver ahead of inflation over five years Events If you already have an account please use the link below to sign in. If you have any problems with your access or would like to request an individual access account please contact our customer service team. 17 out of 18 AIC dividend heroes beat CPI Alasdair McKinnon's Scottish Investment Trust saw the highest rate of dividend growth over the past five years – at 13.2% All but one of the investment trusts that have increased their dividends for 20 years or more have done so at a rate well ahead of inflation over the past five years, according to figures from the Association of Investment Companies (AIC).