Yes, but you would compare your dividend yield to the current value of your investment.

So it would be irrelevant what your investment has done up to now, when you are talking about ongoing yield gain.

I almost tear my hair out when i hear people talk about their "yield to purchase price."

For example you had Coke shares worth 5000, they have now grown to 10,000. Current dividend yield is 2%. You can get 6% in the bank.

Why is it relevant what you paid for the shares initially? We are talking about future returns. All youre doing by holding at that point is giving your gains back to the market (relatively speaking) by compounding at an inferior rate than even the risk free rate.