id: 68 yr ( 4, (1, 0, 0, 3)) (( 2.6, 2.6 ), ( 4.6, 1.9 ))
 +9                 |        +2 
                  |         
                  |      2012  
   +    +    +    +    +    
                  |         
                  |         
                  |         
                  |         
   +    +    +    +    +    
                  |         
                  |         
                  |         
               2013  |         
   +    +   +    +    +    
                  |         
        2014         |         
                  |         
                  |         
   +    +    +    +    +    
                  |         
                  |         
                  |         
                  |         
   +    +    +    +    +    
                  |         
  2011               |         
                  |         
                  |         
 0--+----+----+----+----+----6