Well since I used that graph of part of a presentation I gave on spin training, then I'll add the hundreds of other graphs and stats that there are about this subject.
10% of all accidents are stall/spin related. 13.7% of all fatalities are Stall/Spin related.
Only 3.23% of Stall/Spin accidents occur in cruise.
27.96% in the take off phase.
41% in Manouevering flight.
18.49% on Approach.
6.45% on go-arounds.
The NTSB defines manoeuvering flight to include all of the following: aerobatics, low passes, buzzing, pull ups, aerial application manoeuvers, turns to reverse direction, or engine failures after takeoff with the pilot trying to return to the runway.
These figures are from the NTSB and are based on all accidents between 1993 and 2001.
Here's the link to the study. I think it says it all.
AOPA Online: Stall/Spin