Task 1 IELTS- Acid rain emissions in UK over a period of 17 years

Please check my writing. Thank you very much. :D
The graph below shows UK acid rain emissions, measured in millions of tonnes, from four different sectors between 1990 and 2007.

The graph illustrates the mount of acid rain emitted by some different fields over 17 years period.

There were a dramatic change of the number of acid rain emissions in group 1 including Electricity, Gas and Water Supply, and Domestic and Other industries while Group 2 including Transport and communication was much slighter.

The amount of acid rain emitted of Electricity, Gas and Water supply in 1991 was around 3.3 million tones, following by Other industries and Transport and communication and Domestic with 2.1 million tones, 0.8 million tones and 0.6 million tones, respectively. The number of acid rain emissions of Electricity, Gas and Water supply had declined considerably to 1 million tons in 1999 before increased slightly in the 1999-2001 period. However, it still significantly decreased thereafter to 0.5 million tons in 2007. The trend of the number of acid rain emitted of others in Group 1 was the same as the Electricity, Gas and Water with around 1.5 million tones in Other industries and 0.2 in Domestic.

The number of acid rain emissions of Group 2 was similar in 1999 and 2007 with 0.8 million tones.

188 words. Is this OK?

• 
  
  

over a 17-year period/over a period of 17 years


while the figures for Group 2 were lower


followed by



before increasing


decreased significantly

The graph illustrates the acid rain emitted from four different sectors in the United Kingdom over a period of seventeen years.


... why do you talk about groups here.... that's no where indicated in the prompt or the graph. This is a report you make based on your observations and therefore you need to stick to what the graph presents only.

Thanks guys for helping me fix my mistakes. :D
Hi Dumi,
When I writed this essay, I also did not want the long essay that includes 200 words. The sectors in this Graph have too long names. Therefore, I tried to replace them with Group 1 or 2 and in the main paragraph, I would call them easier and faster. Maybe, it's unacceptable in task 1. :D. I will fix it in the next topic. :D