id: 5 yr ( 11, (8, 0, 1, 2)) (( 9.3, 8.9 ), ( 2.9, 1.3 ))
 +10+    +    +    +    +    +    ++5 
                          |      
                          |   2011  
                          | 2015 13 12    
                          |      
 +    +    +    +    +    + 2016  + 
                          |20192021    
                         20142018      
                         |      
                          |      
-+----+----+----+----+-2020--+----+-
                          |      
                          |      
                          |      
                          |      
 +    +    +    +    +    +    + 
                          |      
                          |      
                          |      
                          |      
 +    +    +    +    +    +    + 
                          |      
                          |      
                          |      
                          |      
 +    +    +    +    +    +    + 
                          |      
                          |      
                          |      
                          |      
 +    +    +    +    +    +    + 
  2017                       |      
                          |      
 -26                         |     -29