What is the correct way to express a number with all its digits?

I have the following table:

On the last column, I have expressed the numbers in billions as it is mentioned at the top. However, I want the last number (Final sample size) to be expressed fully. Is there a way that I can be specific about the fact that this is the full number and not rounded up in billions?

Thank you!

Solution 1:

The most common word for a number that is not rounded up or down, nor approximated in any way is "exact".

The fact that the number is without a decimal and expressed to nine significant figures should be enough for most people to realize it is the exact number, but you can indicate it specifically if you like.