請教老師I-864的問題

我給父母辦綠卡，已經問了幾個問題，下麵再請教老師一個I-864的問題

Par 5 item 5: if you have any other dependents, enter the number here.

My parents visited us last year and stayed here for 183 days, so when I filed my 2012 tax return, I listed them as
my dependents and they have tax id number. So should I put ‘2’ for this question?

Thanks！