IELTS Writing Task 1 to correct

The line graph reflects the difference in movie ticket sales by 5 different genres in 1980-2010 around the world. The information is presented in millions.

Overall, comedy and action were two leaders in 1980, but situation had drastically changed in 2010. Speaking about the worst genre in selling, it was documentary. It remained the last in list from 1980 to 2010.

From 1980 to 2000 two genres such as action and animation were gradually rising, but from 2000 to 2010 they both started sharply rising. So that they were two leaders in 2010, action with about 1500 millions and animation with 1200 millions. Speaking about documentary in the period from 1980 to 2000 it was slowly growing but then it started growing steadily. But still it remained on the last place.

Horror films during all the period had been slowly growing. Speaking about comedy, until 2000 it was gradually falling from about 650 millions to about 350 millions. But then it started growing steadilly, to about 525 millions. (165 words)