Although I don't scrap chronologically, I do like to organise my albums that way. Each year begins with a summary page, listing all sorts of big and little events that happened that year.
I recently finished the 2007 page.
I get this information from my diary.
I look through the diary from the year and copy out all sorts of things. (I sometimes will note down events in my diary that have already happened just for this purpose.) I have listed movies I saw, my working hours for the week, when I met up with friends, started a new job and paid parking fines. All sorts of little facts and events.
Sometimes I have used photos but on other years I haven't.
They record all sorts of things that individually would never have made it onto a layout but combined are such a great summary of the year.