Removing New Issues, from 2011 to May 2015, the TSX Venture has had Over 1,200 Casualties

Removing new issues, from 2011 to April 2015, the TSX Venture has had over1,200 casualties, or has lost over50% of its listed constituents. While new companies have been slowly replacing the dead, the index is still 320 companies lighter.
Companies are still trying, but are failing.