page 4 of N-400 , trips outside USA

[ItalianSposue]

I have been a permanent resident for 25+ years, now I am applying for citizenship , I would visit my parents once or twice a year (always for about one week) , however I have only some of the dates that I reentered the USA, none of date that I left and of course only for about the last five years, what do I put on my form ? I don't want to enter wrong data but don't have correct, no trip was fro more than 10 days at max

[immihelp]

Put the dates to the best of your knowledge.