Analyze The Home Depot's Income Statement. What trends do you note in Sales, Gross Profit, COGS, Expenses, and Net Income?

$ Fiscal Fiscal Fiscal 2020 2019 2018 % of Net % of Net % of Net dollars in millions $ Sales $ Sales Sales Net sales $132,110 $110,225 $ 108,203 Gross profit 44,853 34.0 % 37,572 34.1 % 37,160 34.3 % Operating expenses: Selling, general and administrative 24,447 18.5 19,740 17.9 19,513 18.0 Depreciation and amortization 2,128 1.6 1,989 1.8 1,870 1.7 Impairment loss 247 0.2 Total operating expenses 26,575 20.1 21,729 19.7 21,630 20.0 Operating income 18,278 13.8 15,843 14.4 15,530 14.4 Interest and other (income) expense: Interest and investment income (47) (73) (0.1) (93) (0.1) Interest expense 1,347 1.0 1,201 1.1 1,051 1.0 Other 16 Interest and other, net 1,300 1.0 1,128 1.0 974 0.9 Earnings before provision for income taxes 16,978 12.9 14,715 13.3 14,556 13.5 Provision for income taxes 4,112 3.1 3,473 3.2 3,435 3.2 Net earnings $ 12,866 9.7 % $ 11,242 10.2 % $ 11,121 10.3 % Note: Fiscal 2020 and fiscal 2019 include 52 weeks. Fiscal 2018 includes 53 weeks. Certain percentages may not sum to totals due to rounding. Selected financial and sales data: Comparable sales (% change)(1)(6) Comparable customer transactions (% change) (1) (2) (6) Comparable average ticket (% change) (1) (2) (6) Customer transactions in millions) (2)(3)(6) Average ticket (2) (3) (4) (8) Sales per retail square foot (2) (3) (5) (6) Diluted earnings per share Fiscal 2020 19.7 % 8.6 % 10.5 % 1,756.3 $74.32 $543.74 $11.94 Fiscal Fiscal 2019 2018 3.5 % 5.2 % 1.1 % 1.0 % 2.5 % 4.2 % 1,616.0 1,620.8 $67.30 $65.74 $454.82 $446.86 $10.25 $9.73 % Change Fiscal Fiscal 2020 vs. 2019 2019 vs. 2018 N/A N/A N/A N/A N/A N/A 8.7 % (0.3)% 10.4 % 2.4 % 19.6 % 1.8 % 16.5 % 5.3 %