A company's sales in 2020 were $8 million and its total spontaneous assets were $4.9 million. Also in the same year, the firm's spontaneous liabilities consisted of $7.8 million in wages payable, $4.2 million in accounts payable, and $1.6 million in accrued expenses. The firm's profit margin is 5.9% and its dividend payout ratio is 5.5%. The balance sheet at year-end is similar in percentage of sales to that of previous years and this will continue in the future. Required: What is the percentage increase in sales that the company must achieve in order to avoid raising funds externally? Note: The term "k" is used to represent thousands (* $1,000). % (ROUND YOUR ANSWER TO 2 DECIMAL PLACES, FOR EXAMPLE: 17.23)