How to track clicks on images in your blog

I have been getting lost in documentation so I’m hoping someone can help me out. When I was on wordpress.com, I would see when folks clicked on images in my blog (so it would open the location url – foo.wordpress.com/folder/image.jpg). Now that I’ve moved to my own hosted wordpress instance, I’ve set up google analytics and downloaded wordpress.com stats but I don’t see clicks to documents or images that are internally hosted. Is there a setting somewhere or a plugin I can install that will give me these stats?

Thanks!