id: 29 yr ( 6, (5, 0, 1, 0)) (( 4.4, 5.4 ), ( 3.3, 4.6 ))
 +8             |                 +9 
              |                  
              |               2011  
              |                  
    +    +    +    +    +   2012+   
              |         2010 2013      
              |                  
              |         2014        
              |                 
    +    +    +    +    +    +   
              |                  
              |                  
              |                  
              |                  
----+----+----+----+----+----+---
              |                  
              |                  
              |                  
              |                  
    +    +    +    +    +    +   
              |                  
              |                  
              |                  
              |                  
  2009 +    +    +    +    +    +   
              |                  
 -7             |                 -8