Normal. I've had many kids who don't talk at this age. Honestly, it's a blessing. Soon enough they will be talking both of your ears off and you won't be able to hear them anyway. The range for talking is so huge. I've had a 15 month old who did full paragraphs all the way to a three year old who couldn't string two words together. I don't get too worried until they are around three and then have them evaluated. As long as the receptive language is good and they can follow one and two step directions, I don't get too worked up over the speech.