Form 1116 as Expat with only USA income

I am an expat living in Spain.  I do not work or have any Spain related income.  All my income is from the US and is  interest, dividends, pension, and social security.   I have to pay income tax to Spain for all of this US income.  When I complete form 1116 to claim the Foreign Tax Credit on my US taxes, the form asks me to show my SPAIN income.  (I don't have any Spain income).   Do I show my US income (interest, dividends, retirement, social security, etc) that I reported to Spain and was thus taxed by Spain?  In other words, since I don't have any Spain related income, what do I show as the "Spain Income" on the from 1116?

 

TIA