The line chart compares the amounts of meat, salt, and fish ...
This is good, but still needs more rooms for improvement. If I were you, then I'd like to swap such a sentence into a passive form as like a report writing is developed in general.
It can be clearly seen that the fish consumption numbers ...
The main objective of the overview is to reveal the main trends of the graph constructed in 2 sentences.
the number of meat consumption
This is grammatically incorrect. WRITE the amount, instead of the number
1990 and 1995 where
WHERE refers to a place while WHEN shows a time.
On the other hand,
overusing cohesive devices/ linking words has points deducted.
This word is inappropriate in IELTS task 1.
I suggest reading sample answer as many as you can. This helps you improve grammar, vocabulary and grouping skills in particular IELTS writing report. Hope this helps :D