Category Prior year Current year Accounts payable 41,400 45,000 Accounts receivable 115,200 122,400 Accruals 16,200 13,500 Additional paid in capital 200,000 216,660 Cash 222 222 Common Stock@par value 37,600 42,000 COGS 131,400 179,143 00 Depreciation expense 21,600 23,044.001 Interest expense 16,200 16,623.00 Inventories 111,600 115,200 Long-term debt 135,000 137,763.00 Net fixed assets 377,770 00 399,600 Notes payable 59,400 64,800 Operating expenses (excl. depr.) 50,400 60,236.00 Retained earnings 122,400 136,800 Sales 255,600 339.677.00 Taxes 9,900 19,017.00 What is the firm's current year operating profit margin?