Point Charts have been changed (so far) twice over the past 18+ years (but the 2011 charts have not yet been released and there may be more changes).
From 1991 thru 1995 there were no changes (OKW was the only resort at that time). In 1994, the
Point Chart for 1996 was published with modifications (again at OKW) where some nights were raised a few points and some were lowered a few points. This may be done as long the total number of points needed for a year of reservations at the resort remains the same. As new resorts were added beginning in 1995, the Point Charts remained unchanged thru the next 14 years.
In January,2009 changes were again announced for 2010 and the 2011 charts are expected any time now - possibly with more changes (again, as long as the total points needed to reserve each resort for the year are not changed, these reallocations are allowed in the program).
Here is a thread from several years ago discussing the changes made in for OKW in 1996 -
1996 Point Chart reallocation.
Here is a link to a download showing the point charts from 1996 - 2009 - this was created by Caskbill, a moderator on the
DVC Forums for many years until we unexpectedly lost him in summer, 2009 -
DVC-Chart.
His planning tools have been used by many on these boards, but have not been updated since last spring. An update is expected in the near future.