While dividend payments have been relatively reliable, it would also be nice if earnings per share (EPS) were growing, as this is essential to maintaining the dividend's purchasing power over the long term. Strong earnings per share (EPS) growth might encourage our interest in the company despite fluctuating dividends, which is why it's great to see Infrastrutture Wireless Italiane has grown its earnings per share at 12% per annum over the past five years. While EPS are growing rapidly, Infrastrutture Wireless Italiane paid out a very high 91% of its income as dividends. If earnings continue to grow, this dividend may be sustainable, but we think a payout this high definitely bears watching.