I have been given a set of data that is made up of dates ranging from 1/1/2013-12/31/2015. I have been asked to determine how many days each year Employee #2 has made a sale (i.e. how many days in 2013, 2014, 2015)

For example:

Employee two has sales recorded on these dates:
Column E:

1/1/2013
1/1/2013
1/1/2013
1/2/2013
1/5/2013
1/6/2013
1/6/2013
1/10/2013

Right now, for 2013, I have:

=COUNTIFS(E25:E8095, ">=1/1/2013", E25:E8095, "<=12/31/2013"

However, I do not want it to count 1/1/2013 three times, I just want it to record it once. How do eliminate duplicate values in my equation?

Thank you!