Final answer:
The U.S. imports more than 30% of its energy needs.
Step-by-step explanation:
According to the given information, the U.S. consumes 21% of the world's oil production per year, while having only 4.25% of the world's population.
However, the question specifically asks about the percentage of energy needs, not just oil consumption. While the given information does not provide an exact percentage for all energy resources, it states that petroleum supplies 37% of energy consumption in the U.S.
Therefore, it is safe to say that the U.S. imports approximately more than 30% of its energy needs.