Search for the median age of the US population and output the exact figure in years.
As of 2021, the median age of the US population is 38.5 years.
Complete the following task based on the instruction and optional input provided.### Instruction:
Search for the median age of the US population and output the exact figure in years.

### Output:
As of 2021, the median age of the US population is 38.5 years.