80 +
     |
  70 +                                             |----- 
S    |                                             |
  60 +                                       |-----|
E    |                                  |----|
  50 +                                  |
C    |                             |----|
  40 +                         ____|
O    |                   |----|
  30 +                   |
N    |              |----|
  20 +              |
D    |         |----|
  10 +    |----|
S    |____|
   0-+----+----+----+----+----+----+----+----+----+----+
     0    10   20   30   40   50   60   70   80   90   100
       P e r c e n t a g e   C o m p l e t e