Answer the following questions concerning the given partial stock quote:

Name	Symbol			Close			Volume			Div			P/E			YTD %Chg
Abbott Laboratories		ABT		$	53.75			4,905,983			1.3			44			10.3

1. What was the dividend yield?
2. What was the most recent four quarters of earnings per share?
3. Valued at the closing price, what was the total dollar volume of shares traded?
4. What was the stock price at the beginning of the year?