I need a Cheaper Car Insurance!

I am sooo tired of my car insurance going up. It seems like it goes up at least every six months. The problem is I haven't had an accident in a long time, and I haven't gotten any tickets so why does it keep going up?? I personally am getting really sick of it. I have decided to look online for a cheaper car insurance. I have checked some sites, but I really don't know which would be the best. Does anyone have any suggestions?