While I understand that it is easier for you to write a compressed sentence for the summary overviww, the formst you have chosen to represent your summary does not fully allow for summary clarity due to the confusing flow of information. Too much information is being preented in the single sentence that normally, should be divided into at least 3 sentences. In this case, the more relaxed and easier to remember summary would have been:
Sentence 1 - Image type and discussion focus
Sentence 2: Listing of image information
Sentence 3: Start and ending point of the measurement
Sentence 4: Measurement type
Sentence 5: Trending sentence (if a paragraph is not necessary)
A sentence is normally considered more informative by the reader when it presents one stand alone piece of information to the reader, within a related paragraph presentation. That is because the information becomes scannable and easier to memorize for the reader When compared to a run -on sentence, the possibility of a confusing grammar presentation is avoided and, a better score can be given to the exam taker.
starting in 1998.
Although you did mention a decade coverage for the presentation, the mere fact that the starting and ending months are mentioned in the image itself requires you to present the end date as well. Again, this is for clarity purposes and in deference to people who may not have the time to count 10 years as they read your prsentation. Yes, it seems to be a dumbed down way of presenting the information. However, in a task 1 essay, which is based on clear data reporting, informing the reader about highly specific information helps increase your overall score due to the proper use of information and presentation clarity within the paragraphs.
There is a part of this report that requires you to make comparisons where relevant. The overlapping information from 2002 should have been reported in the presentation as an equivalency point where the measurement for landline and cellular phone services were equally represented. That is a pivotal measurement point that you should have mentioned as a part of a proper analysis if the image.