Based on the financial statements presented below for Walsh Corp., what was the company's net operating profit after tax for the most recent year?

Statements of Income (in millions of dollars) For years ended 12/31 2015 2016 2014 2017 Net Sales 2,550.0 3,020.0 3,300.0 3,470.0 2,242.0 2,680.0 2,920.0 3,044.0 118.0 96.0 90.0 90.0 (8.0) (8.6) (9.2) (10.0) Expenses (Income): Operating costs Depreciation Interest Income Interest Expense Total Expenses EBT Taxes (40%) Net Income 53.0 56.6 60.2 67.0 2,405.0 2,824.0 3,0610 3,1910 145.0 196.0 239.0 279.0 58.0 78.4 95.6 1116 87.0 117.6 143.4 167.4 Balance Sheets (in milions of dollars) As at 12/31 2015 2016 2014 2017 Cash 70.0 26.0 28.0 44.0 40.0 55.0 75.0 200.0 200.0 230.0 248.0 268.0 250.0 300.0 323.0 352.0 560.0 611.0 674.0 864.0 Marketable Securities Accounts Receivable Inventories Total Current Assets Gross Plant and Equipment Accumulated Depreciation Net Plant and Equipment Total Assets 1,997.0 2,243.0 2,373.0 2,596.0 670.0 766.0 856.0 946.0 1,327.0 1,887.0 1,477.0 2,088.0 1,517.0 2,191.0 1,650.0 2,514.0 60.0 66.0 69.0 72.0 400.0 446.6 484.0 508.0 150.0 165.0 174.0 183.0 610.0 677.6 727.0 763.0 420.0 480.0 504.0 528.0 Accounts Payable Notes Payable Accruals Total Current Liabilities Long-Term Bonds Total Liabilities Common Stock (10,000,000 shares) Retained Earnings Total Common Equity Total Liabilities and Equity 1,157.6 1,2310 375.0 1,2910 500.0 1,030.0 340.0 517.0 857.0 1,887.0 355.0 575.4 585.0 960.0 930.4 2,088.0 723.0 1,223.0 2,514.0 2,191.0