How do I track the number of people coming on my old website which has a 301 redirect to the new one?

I was using http://ift.tt/2nsXJB8(1) earlier and later moved to http://ift.tt/2nWz04P(2). Both the websites are from GoDaddy and I use their redirection service for 1 to 2 (for 1 year). Now I want to stop using the first domain (I was using it for SEO purpose or for whoever had it earlier).

How do I know how many people visited the 1st domain and were redirected to 2nd one?