Most simple resources can be cited by using EasyBib and choosing the type of resource you are trying to cite - a book, article, website, etc.
Statista has just announced a citation feature for their charts! This will make it easier to cite this resource. Use the Citation pulldown on the left side of the screen, shown here circled in red. This will give you the proper citation for APA, Chicago or MLA style.
Then copy and paste the citation (example circled in red below), making sure you format it properly with the hanging indent, itialics, etc.: