Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Antidilutive Securities (Details)

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Summary of Significant Accounting Policies - Antidilutive Securities (Details) - shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share options      
Antidilutive securities      
Weighted average number of share options (in shares) 115,225,480 93,812,818 96,675,101