I voted 10-15 which is my average. My first I gained 8kgs, the second 10kgs, the third 12kgs and I am up to 14kgs with this one already! With my first I lost all the weight and was back to pre-preg weight within a month or 2. I didn't have enough time to quite make it back to pre-preg between 2-3-4 so I'm expecting to have a jelly belly for life after this one!