7,632,819,325
World Population (2018 and historical).
Hope that helpful --------------------------------------
Answer:
A lot of people like trying new experiences that seem scary like roller coasters, skydiving, cliff jumping and etc for a couple different reasons one may be for the thrill of doing things like those listed above because they can give you an adrenaline rush which some can actually be addicted to that rush and the second they may like to test their boundaries as a person or try to get over their fears.
Explanation:
