First in all, the chat depicts the average annual Gross Domestic Product (GDP) growth over ranging 1960-to-1990. There are mentioned three aspects; wealth countries, globalisers and non-globalisers.
Well, I think you need to have a different approach for this task. This is what I suggest;
1. Introduce the graph (Write one or two sentences that introduce your graph to the reader. Do this by paraphrasing the title of the graph - make sure to include time frame it there's one)
2. Give an overview (You also need to state what the main trend or trends in the graph are. Don't give detail such as data here and tell them your major observations)
3. Give the detail (You can now give more specific detail in the body paragraphs)