Attendance Sheet

Hello friends,

Please help me for following issue.

I have created an attendance sheet in excel having 12 sheets (for all months like Jan, Feb, etc). in each sheets, all activities like number of present day, absent day, etc are counted. Now I want to add one more sheet that should have result of all sheets (say, total present day, absent day, etc of an executive month wise and it should be added at the end i.e. total present day, absent day etc of an executive in a year)

Please suggest how to do it.

You can find the sample format at http://speedy.sh/XxwzT/Sample.xlsx