John Wood Group PLC - ratios & clear simple analysis (2-4 sentences each)

Based on the last 3 annual reports from 2014, 2015, and 2016 (available at https://www.woodgroup.com/investors/financial-information/annual-and-interim-reports) provide an analysis of the following important ratios measuring liquidity, profitability, capital structure and market-value aspects of the company performance: liquidity: current ratio profitability: net profit margin ratio and Return on total assets capital structure: debt ratio and Interest cover ratio market value: price-earning (P/E) ratio. Your analysis should highlight the important changes within these ratios over this period and identify the reasons for significant changes.