The problem is that you don't have any Google Analytics code on your page.
Google provides you with code to past into each page—either in the <head> section or preferably just before the closing <body> tag.
You do have this,
but it leads to nothing (is a broken link) and I'm not sure if that's a valid way to include Analytics anyhow. (I've not seen it done with a link to a separate file before.)