If you reinvested the dividends in the same stock, your total return is roughly 300 percent, or about 17 percent annualized. If you bought it 10 years ago, your yield now is 11 percent of the split-adjusted price per share you paid then. Your total return if you reinvested the dividends in the same stock is 338.8 percent, an annualized rate of about 16 percent. Of course, there's no guarantee of returns like this in the future. No company guarantees payment of a dividend over time.
Dividends are a share of profits.
If the profits disappear, so will the dividends. In addition, a company might change course and decide to reinvest its profits in the company, or in buying back shares, rather than in paying dividends. Many have done so in the past decade. Having said that, you're likely to have much better luck picking stocks that will deliver dividends than picking stocks that will deliver growth. That's because there are scores of companies out there that have been paying dividends regularly for years, even decades, without interruption, at increasing rates.