Pronghorn Inc. and Culver Corporation are Canadian fertilizer companies. The following information has been taken from their financial statements for the fiscal years ended December 31. All figures are in millions of dollars.

CULVER		2021		2020		2019
Net sales		$8,862.0		$4,544.1		$3,049.5
Gross profit		5,228.1		1,885.0		1,053.4
Profit		3,534.2		1,167.0		675.0

PRONGHORN		2021		2020		2019
Net sales		$9,217		$5,710		$4,306
Gross profit		3,590		1,694		885
Profit		1,193		410		36

1) Calculate both companies gross profit margin and profit margin for the years 2019 through 2021. (Round answers to 1 decimal place, e.g.52.7%.)

2)

Determine which company had the best performance for profitability in each year.

3) Using horizontal analysis, calculate the percentage change between the following years: 2019 and 2020; 2020 and 2021 for both companies. (Round answers to 1 decimal place, e.g.52.7%.)

4) Using the information in the horizontal analysis, identify the company that had the most improvement in net sales, gross profit margin and profit margin in 2020 and 2021.