The bar charts depict ... 1981 and 2001.
This is the first problem in your presentation. You are compressing the information too much into one sentence. Every sentence must represent a single idea or piece of information. So, it would be best for you to divide the information in this sentence into at least 3 lines or 3 sentences. That way you avoid GRA deductions based on run-on presentations. Remember, a run on will not be scored as a sentence style or variation. It will cause a lowering of your score instead.
the remains experienced the opposite
This presentation part is not very clear to the reader. What do you mean by "remains". Did you mean, "the remainder" instead? Word accuracy is important in this test because it helps the reader better understand your meaning and also, the examiner can better assess your vocabulary capacity. In this case, the LR and GRA scores will both receive deductions.
Good job on the word count though. You really managed to present an acceptable word number. You should work on the coherence and cohesiveness of your presentation more so that you can improve your sectional considerations.