You are a consultant for Tonya's Totally Trendy T-Shirts (an online t-shirt vendor). As part of your consulting contract, you are conducting an assessment of the company's business risk. You looked at their performance from last year to this year. The data are found in the table below. Based on this data, what is Tonya's Totally Trendy T-Shirts' degree of operating leverage (DOL)? (Use the definitional formula - not the "alternate formula" from the book to solve this question, and use three decimal places in your response.)