Fiscal Year Ended December 31 201920182017 (in thousands) Gross sales $2,004,719$1,937,021$1,835,987 Less: Sales discounts Less: Sales returns and allowances Net sales $1,997,502$1,930,048$1,829,378 Cost of goods sold Gross profit $1,376,039621,463$1,310,201619,847$1,168,423660,955 Operating expenses Operating income $798,670577,369$714,975595,226$584,868583,555 Other income (expenses) Net income $814,64315,973$709,035(5,940)$576,095(8,773) At December 31 Accounts receivable \begin{tabular}{rrr} \hline$201,290 & $195,427 & $182,642 \\ 2,516 & 2,736 & 2,192 \\ \hline$198,774 & $192,691 & $180,450 \end{tabular} 1. Calculate the following ratios for 2018 and 2019. Round your answers to two decimal places. 2. Are operations improving or worsening