id: 106 yr ( 2, (2, 0, 0, 0)) (( 2.5, 2.9 ), ( 20.5, 16.8 ))
 +23                          +20 
+    +    +    +    +    +  
|                        2011  
|                           
|                           
|                          
+    +    +    +    +    +  
|                           
|                 2012         
|                           
|                           
+    +    +    +    +    +  
|                           
|                           
|                           
|                           
+    +    +    +    +    +  
|                           
|                           
|                           
|                           
+    +    +    +    +    +  
|                           
|                           
|                           
|                           
+    +    +    +    +    +  
|                           
|                           
|                           
|                           
 0----+----+----+----+----+-