Please help check my IELTS task 1

Following is my latest essay. Please help me check whether there are any errors and give me an estimated band score if possible. It would be nice if the score is given specifically as the criteria of the IELTS test.

TOPIC:

The chart and graph below give information about sales and share prices for Coca-Cola.
Write a report for a university lecturer describing the information shown below.

Task 1:

The data of soft drink sales in 2000 and stock price figures from 1996 to 2000 of Coca Cola are depicted in the two given charts.

Regarding the pie chart information about sales, in 2000, Coca Cola had the mass of sales of 17.1 billion cases; 30.4% of that were purchased by North American residents. This proportion made North America the largest market of all. South America and European countries, which accounted for 25.7% and 20.5% respectively, took the place of second and third runners-up, following by Asia with the proportion of 16.4%. The least number of products were sold in Africa and Middle East area (the remaining 7%).

Since 1996, Coca Cola's price per share have fluctuated. From 1996 to 1998, the firm experienced a booming period when the stock price two-folded in 1997 from $35 to nearly $70 per share; slightly dipped to $60 but however, hit its peak at $80 later in 1998. Since then, it went down gradually to $45 in 2000 and increased again latter that year.

Thank you for your generous support.