It's What's Inside That MattersEdwards Lifesciences Annual Report
Selected Operating Information
Twelve months ended December 31, (in millions) 2006 2005 2004

Net sales $ 1,037.0 $ 997.9 $ 931.5
Cost of goods sold   373.6   374.6   370.2
Gross profit   663.4  623.3  561.3
Selling, general and administrative expenses   376.0   348.7   319.9
Research and development expenses   114.2  99.0  87.0
 
Operating Statistics
As a percentage of net sales:
 
Gross profit   64.0%   62.5%   60.3%
     Selling, general and administrative expenses   36.3%   34.9%   34.3%
     Research and development expenses   11.0%   9.9%   9.3%
     Operating margin(a)   16.7%   17.6%   16.6%
 
(a) Operating margin is calculated by subtracting selling, general and administrative expenses and research and development expenses from gross profit and then dividing by net sales.

The information contained in the table above should be read in conjunction with Edwards Lifesciences’ “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Consolidated Financial Statements” found in the company's Annual Report on Form 10-K (PDF).