| 2020 q1 consolidated financial report | 
                                
                                
                                  (pdf)
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                                | 2019 consolidated financial report | 
                                
                                
                                  (pdf)
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                                | 2019 q3 consolidated financial report | 
                                
                                
                                  (pdf)
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                                | 2019 q2 consolidated financial report | 
                                
                                
                                  (pdf)
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                                | 2019 q1 consolidated financial report | 
                                
                                
                                  (pdf)
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                                | 2018 consolidated financial report | 
                                
                                
                                  (pdf)
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                                | 2018 q3 consolidated financial report | 
                                
                                
                                  (pdf)
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                                | 2018 q2 consolidated financial report | 
                                
                                
                                  (pdf)
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                                | 2018 q1 consolidated financial report | 
                                
                                
                                  (pdf)
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                                | 2017 consolidated financial report | 
                                
                                
                                  (pdf)
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                                | 2017 q3 consolidated financial report | 
                                
                                
                                  (pdf)
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                                | 2017 q2 consolidated financial report | 
                                
                                
                                  (pdf)
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                                | 2017 q1 consolidated financial report | 
                                
                                
                                  (pdf)
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                                | 2016 consolidated financial report | 
                                
                                
                                  (pdf)
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                                | 2016 q3 consolidated financial report | 
                                
                                
                                  (pdf)
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