| January | 
          +0.46%
 | 
          +1.65%
 | 
          +3.55%
 | 
          
            +5.44%
           | 
          
            -0.05%
           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
        
                                
          | February | 
          +0.42%
 | 
          +0.87%
 | 
          -9.12%
 | 
          
            -12.15%
           | 
          
            -7.50%
           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
        
                                
          | March | 
          +0.45%
 | 
          +0.51%
 | 
          -6.33%
 | 
          
            -9.18%
           | 
          
            -6.67%
           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
        
                                
          | April | 
          +0.43%
 | 
          -0.42%
 | 
          +7.78%
 | 
          
            +10.58%
           | 
          
            +6.95%
           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
        
                                
          | May | 
          +0.47%
 | 
          +0.61%
 | 
          +0.65%
 | 
          
            +1.42%
           | 
          
            -4.13%
           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
        
                                
          | June | 
          +0.47%
 | 
          +0.39%
 | 
          -2.42%
 | 
          
            +0.66%
           | 
          
            -3.99%
           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
        
                                
          | July | 
          +0.48%
 | 
          +2.22%
 | 
          -0.98%
 | 
          
            -4.13%
           | 
          
            -1.79%
           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
        
                                
          | August | 
          +0.45%
 | 
          +1.20%
 | 
          -6.27%
 | 
          
            -4.32%
           | 
          
            -2.58%
           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
        
                                
          | September | 
          +0.43%
 | 
          +1.15%
 | 
          -8.05%
 | 
          
            -12.50%
           | 
          
            -9.95%
           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
        
                                
          | October | 
          +0.41%
 | 
          +2.12%
 | 
          +1.85%
 | 
          
            +5.09%
           | 
          
            +2.47%
           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
        
                                
          | November | 
          +0.37%
 | 
          -1.37%
 | 
          +7.62%
 | 
          
            +7.84%
           | 
          
            +3.56%
           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
        
                                
          | December | 
          +0.42%
 | 
          -0.61%
 | 
          +0.88%
 | 
          
            +5.31%
           | 
          
            +0.52%
           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           | 
                  
            -           |