There are two spaces to the left of each item. Use the second one. The entry will be displayed in red (at least that's how it looks on mine. I use OpenOffice so YMMV). That's the column used by the stats generator.
Put a 1 in the "got it" column and (if you want) a count in the first column to show how many you have of that item. The stats generator doesn't care what's in the first block. If you put a number bigger than 1 in the "got it" column then the stats generator will count it that many times resulting in wrong numbers.