repeating formula with links to different arrays of data

Hi, I'd like an easy way to sum many strings of data (all of the same length) on one sheet. My raw data look something like this:
2001
1
2
3

2002
4
5
6

My summary table looks like this:
2001 2002
6 15

I can easily transfer the raw data to the summary table by writing a couple formulas. However, I don't want to write separate formulas for each cell in the summary sheet since I have many of them. Is there a way to write formulas so that the formulas are identical, while the specified cell ranges change?
Thanks.