Please include one financial strength and one financial weakness of Chipotle Mexican Grill. The strength and weakness must be based on a ratio's trend using following data:-

Growth Profitability and Financial Ratios for Chipotle Mexican Grill Inc Class A Profitability Net Margin % Return on Assets % Financial Leverage (Average) Return on Equity % Return on Invested Capital % 2017-12 2016-12 2015-12 2014-12 2013-12 2012-12 10.84 19.55 1.27 25.09 25.09 3.94 8.66 10.18 0.59 0.97 10.57 18.04 1.28 22.97 22.97 10.19 17.81 1.31 23.52 23.52 17.97 12.74 12.74 24.28 24.2 2017-12 2016-12 2015-12 2014-12 2013-12 2012-12 Liquidity/Financial Health Current Ratio Quick Ratio Financial Leverage 1.94 1.73 2.91 3.58 3.29 1.27 3.34 3.04 1.31 2.93 1.85 1.64 1.44 2.67 1.28 Key Ratios->Efficiency Ratios Efficiency Days Sales Outstanding Days Inventory Payables Period Cash Conversion Cycle Receivables Turnover Inventory Turnover Fixed Assets Turnover Asset Turnover 2017-12 2016-12 2015-12 2014-12 2013-12 2012-12 3.68 1.61 8.79 2.61 1.73 7.85 1.68 1.83 9.63 6.12 99.18 123.12 139.61 157.52 216.86 199 3.37 1.77 2.96 1.67 8.52 3.89 2.32 1.87 1.71 7.87 2.86 110.66 -4.92 213.32 226.61219.06 210.78 195.51 3.51 1.74 3.39 3.87 3.97 1.64