Count Frequency?

I have attached a spreadsheet with what I want to do.

I need a formula that will tell me how many of a number are in a list. But I need it to record how many of each number are in the list, without knowing which numbers are going to be in the list. The list can hold any number from 0 to 1000. I don't want to do countif's from 0 to 1000. Is there a better way of doing this? I have to record the results for each number in its own cell so I can reference it later.

See attachated.

THANKS for any help on this,
Ken