Help Me Correct With Writing Task 1?

The bar graph reveals the number of television receivers per 1,000 inhabitants in the world between 1970 and 1997. Overall, there were nearly three times as many television receivers in the world in 1997 as in 1970.

Worldwide, the number of TV sets per thousand individuals nearly triple from 81 television receivers per 1000 inhabitants to 240 television receivers per 1000 inhabitants, making it the highest number of TV owners per 1000 individuals at the reported time. Similarly, the ownership of TV receivers in Developed countries experienced a dramatic increase, stood at 548 by 1997. It was following by Developing countries, which had 9.9 TV sets per 1000 inhabitants in 1970 and grew considerably to 157 TV sets per 1000 inhabitants after about 3 decades. By contrast, the least number of TV sets per thousand individuals was in Least developed countries, from 0.5 to 23 television receivers throughout the period from 1970 to 1997.