Okay good your lifts are pretty decent after a year of lifting. You'll find out from a lot of people most of the muscle is made in the kitchen. I would even go as far as 80% of lean muscle gain comes from the kitchen. Don't get me wrong training is just as important but when it comes to nutrition it should never be over looked. I would suggest trying to find a decent 3,500-4,000 calorie diet to add weight to your frame.
You'll find that once you start eating more your weights in the gym will rise quickly. If your not doing so already look into a decent meal plan that consist of eating 5-6 times a day.