Dropdown box values

Hi all,

I have a dropdown box which gets values from datasouce in the following way:

DROPDOWN_YR.setItems(DS_1.getMemberList("0CALYEAR", MemberPresentation.EXTERNAL_KEY, MemberDisplay.TEXT, 5));

The result I get is: 2010, 2011, 2012, 2013, 2014.

I want to display only last 3 years: meaning: 2012, 2013, 2014.

Is there a way to sort the result in a descending order and filter only last 3 years?

Or - is there another way to achieve this goal?

Thanks,

Hagit