Travel History on Settlement form

What if you are a ridiculously frequent traveller? The form asks for details of trips to the UK and other countries during the past 10 years. That's going to be over 100 for me! I don't remember all the dates and durations and not all are stamped in my passport or are too faint to read. Anyone else had this problem?

I just wrote every one out. They're asking for it, so you may as well do it. I remember my list being very, very long. But I don't remember having to put in durations - I thought I just wrote something like "May 2010: San Francisco, USA."