id: 90 yr ( 10, (2, 0, 2, 6)) (( 4.0, 3.8 ), ( 3.2, 1.9 ))
 +11                   |           +5 
                    |            
                    |         2012  
                    |            
+    +    +    +    +    +    +  
                    |            
                    |            
                    |            
                    |            
+    +    +    +    +    +    +  
                    | 2013          
                    |            
                  2014 |            
                    |            
+    +    +    +  2015 +    +    +  
                    |            
                    |            
                    |            
                2019 2021 |            
+    +    +    +    +    +    +  
                2018   |            
                    |            
              2020     |            
                    |            
+----+----+----+----+----+----+--
                    |            
                    |            
                    |            
    2017               |            
+    +    +    +    +    +    +  
                    |            
                    |            
  2016                 |            
                    |            
 -4    +    +    +    +    +    + -9