The rate of sales ( in billions of dollars per year) in drinking places that serve alcoholic beverages can be approximated by f(x), where x=1 corresponds to the start of the year 2001. Find total sales (to the nearest billion) between the start of 2001 and the start of 2016.

f(x)=2.3ln x + 11 (1x16)

Set up the integral that represents the total sales between the start of 2001 and the start of 2016.