Please help! Please make it comprehensive and easy to understand. Thank you!

Provide an overview of the Commonwealth Bank of Australia payout policy in recent years. Which percentage of the company's earnings was distributed to investors as dividends? Which percentage of earnings was reinvested in the company? Did the company engage in dividend smoothing? Did the company for any share repurchases in recent years? (One way to find out about share repurchases is to investigate any changes in number of outstanding shares on the company's balance sheets between different years). Why do you think the company made these decisions?