How to align data based on country and year?

Hi, just registered and hope you guys could help me with a tedious task. I have two relatively long sets of data.
Country, Year, % in primary education
Country, Year, GDP per capita

So I want to be able to make a scattergram of % in primary and GDP per capita, but the two lists don't match up perfectly; some countries/years are in one but not in another. Is there a quick way to have each row of these two lists matched up by what's in the first two columns so I can make a scattergram without matching myself and copy pasting?

Thanks
Greg