Calc Manager question

hi,

i'd like a more compact way of spreading data within an account for a specific month & year to the same month but increment the year by one.  So if I enter a value in accountX for 2015, then I would like to see that value set from 2015 to the last member of the Year dimension..

                 2010  2011    2012   2013    2014   2015 ..  . ........   2030

account X

many thanks.

gc