Wanting to perform a financial analysis on Airbnb for the last three years on their Statement of Operations (income statement). Need to perform a write-up explaining their changes both horizontally and vertically.

%% change %% change between between 2021 line 2020 line items as % 12 Months Ended Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands 2020 and 2019 and items as % of items as % of of total 2021 2020 total revenue total revenue revenue Dec. 31, 2021 Dec. 31, 2020 Dec. 31, 2019 Horizontal Analysis Vertical Analysis Revenue Revenue $ 5,991,760 $ 3,378,199 5 4,805,239 77.37%% -29.70% Costs and expenses: Cost of revenue 1,155,833 876,042 1,196,313 8.28% -6.67% 19.29% 25.93% 24.90% Operations and support 847,057 877,901 815,074 -0.91% 1.31% 14.14% 25.99% 16.96% Product development 1,425,048 2,752,872 976,695 -39.31% 36.96% 23.78% 81.49% 20.33% Sales and marketing 1,186,332 1,175,325 1,621,519 0.33% -9.29% 19.80% 34.79% 33.74% General and administrative 835,324 1,134,851 697,181 -8.87% 9.11% 13.94% 83.59% 71.38% Restructuring charges 112,849 151,355 -1.14% 3.15% 9.51% 4.48% 0.00% Total costs and expenses 5,562,443 6,968,346 5,306,782 -41.62% 34.58% 92.83% 206.27% 110.44% Income (loss) from operations 429,317 (3,590,147) (501,543) 118.98% -64.28% 7.17% -106.27% 10.44% Interest income 12,734 27,117 85,902 -0.43% -1.22% 0.21% 0.80% 1.79% Interest expense (437,599) (171,688) 9,968) -7.87% -3.37% -7.30% -5.08% 0.21% Other income (expense), net (304,659) (947,220) 13,906 19.02% 20.00% -5.08% -28.04% 0.29% Loss before income taxes (300,207) (4,681,938) (411,703) 129.71% -88.87% -5.01% -138.59% -8.57% Provision for (benefit from) income taxes 51,827 (97,222) 262,636 4.41% -7.49% 0.86% -2.88% 5.47% Net loss $ (352,034) $ (4,584,716) $ (674,339) 125.29% -81.38% -5.88% -135.71% -14.03% Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, diluted (in Shares) 615,891 284,363 260,556 9.81% 0.50% 10.28% 8.42% 5.42% Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, Basic (in shares) 615,891 284,363 260,556 9.81% 0.50% 10.28% 8.42% 5.42% Common Class A Costs and expenses: Net loss per share attributable to Class A and Class B common stockholders, $ (0.57) $ (16.12) $ (2.59) 0.00% 0.00% 0.00%% 0.00% 0.00% basic (in dollars per share) Net loss per share attributable to Class A and Class B common stockholders, diluted (in dollars per share $ (0.57) $ (16.12) $ (2.59) 0.00% 0.00% 0.00% 0.00% 0.00% Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, diluted (in Shares) 615,891 284,363 260,556 9.81% 0.50% 10.28% 8.42% 5.42% Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, Basic (in shares) 615,891 284,363 260,556 9.81% 0.50% 10.28% 8.42% 5.42% Common Class B Costs and expenses: Net loss per share attributable to Class A and Class B common stockholders, basic (in dollars per share) $ (0.57) $ (16.12) $ (2.59) 0.00% 0.00% 0.00% 0.00% 0.00% Net loss per share attributable to Class A and Class B common stockholders, diluted (in dollars per share) $ (0.57) $ (16.12) 5 (2.59) 0.00% 0.00% 0.00% 0.00% 0.00% Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, diluted (in Shares) 615,891 284,363 260,556 9.81% 0.50% 10.28% 8.42% 5.42% Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, Basic (in shares) 615,891 284,363 260,556 9.81% 0.50% 10.28% 8.42% 5.42%