The given graph illustrates how many tourists visited international museums from 1980 to 2015. Overall, it is clearly seen that the Vatican and London Science Museums had almost the same number of visitors from 1990 to 2000. In addition, the Louvre and the London Science Museum had nearly the same number of millions.
Only one museum has a rapid increase in contrast to the other three, and this is the Vatican Museum. Even though the Louvre was invariably first, it had unstable changes. In addition, the other two do not have noticeable, strong changes except for changes in places in terms of the number of millions.
The Louvre always ranked number one in visitors; however, the Vatican Museum, which was in second place with 5 million, has gradually increased and almost reached the Louvre number. For example, from 2010 to 2015, the difference was extremely small—not even one million. For contrast, the Shenzhen and London Science Museums underwent rapid changes. For example, the London Science Museum has a gradual decrease; however, the second museum has an upward tendency. Nevertheless, from 1990 to 2000, both museums had stability, but Shenzhen rose in contrast to the London Science Museum.