Gross number of questions answered in a given period of time

An account dashboard feature to track the # of questions you have answered in a given period of time. For Example from mm/dd/yyyy-mm/dd/yyyy = 1234 questions answered. As a specific example I wanted to know how many questions I have answered in the 4 weeks leading up to my test, but it would also be useful for 6 weeks out to see where I started versus ended up just by sheer gross numbers.