Statement of Profit or Loss for the year ended 31 December 2020.
figures are in (Millions)SAR	2018	2019	2020	2021
Revenue	2,096.00	2,225.30	2,303.10	2,225.10
Cost of Sales	-1,320.90	-1,380.70	-1,577.20	-1,601.50
Gross Profit	775.1	844.6	725.8	623.6
Selling and Marketing Expenses	-525.6	-537.9	-545.4	-483.9
General and Administrative Expenses	-119	-114.8	-112	-148
Impairment Losses on Trade Receivables	-6.7	-6.9	-4.3	-5.3
Other Income	1.2	10.9	119.9	-64.9
Impairment losses on Property, Plant and Equipment	-52.7		-99.4	-51.2
Land development cost written off		-80		-83.6
Operating Profit	72.3	115.9	84.6	-213.3
Finance cost	-67.6	-75.4	-43.6	-32
Net gain/ (loss) on Derivative Financial Instruments		-42.9	0.4	0
Profit/ (Loss) before Zakat	4.7	-2.4	41.4	-245.3
Zakat	-2.9	-4.9	-5.7	-39.7
Profit/ (Loss) for the year	1.7	-7.3	35.7	-285

Solve the following ratio of the 4 years

sales growth

opreating profit margin

Net profit margin