Between 2009 and 2018 (with absence in 2017) the business magazine Forbes had compiled an annual list of the world's most powerful people. The list had one slot for every 100 million people, meaning in 2009 there were 67 people on the list, and by 2018, there were 75. Slots were allocated based on the amount of human and financial resources that they had sway over, as well as their influence on world events.
Fetching the article from Wikipedia…
Text from the Wikipedia article “The World's Most Powerful People”, available under CC BY-SA 4.0.