I asked about this recently since I just got all the orientation materials, including the ones about amending an application if you omitted anything at all from your original application. I realized I forgot to list a traffic ticket (talking on a cell phone while driving), so I emailed the dean to ask about it. He said to make a "good faith effort" on listing each one and the dates. However, I just decided to get a driving record from the DMV. It only costs $12, and it ensures that you list absolutely everything. Better safe than sorry.