A good viz on how you should build a line graph and the importance to have all the relevant information but no more than that (see the slides docs.google.com/presentation/d/1Xud7dLn…
“Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away.”
―Antoine de Saint-Exupéry
Additionally, it seems the Gini coefficient is going significantly down worldwide that is also a great news and against ordinary knowledge.
If you want to learn more on Gini coefficient and how it is calculated see the below resource from Khan Academy: youtu.be/y8y-gaNbe4U