| Report of Foreign Issuer - Form S3 Registration Statement | November 25, 2020 |
| Report of Foreign Issuer - Form S3 Registration Statement | November 25, 2020 |
| Report of Foreign Issuer | October 26, 2020 |
| Report of Foreign Issuer | September 21, 2020 |
| Report of Foreign Issuer | September 17, 2020 |
| Report of Foreign Issuer | September 14, 2020 |
| Report of Foreign Issuer | September 10, 2020 |
| Registration Statement Pursuant to Employee Benefit Plan | August 13, 2020 |
| Report of Foreign Issuer | July 31, 2020 |
| Report of Foreign Issuer | July 31, 2020 |
| Prospectus Filed Pursuant to Rule 424(b)(5) | July 30, 2020 |
| Report of Foreign Issuer | July 28, 2020 |
| Prospectus Filed Pursuant to Rule 424(b)(5) | July 28, 2020 |
| Report of Foreign Issuer | July 15, 2020 |
| Report of Foreign Issuer | June 22, 2020 |
| Report of Foreign Issuer | May 27, 2020 |
| Report of Foreign Issuer | May 15, 2020 |
| Report of Foreign Issuer | May 7, 2020 |
| Report of Foreign Issuer | April 30, 2020 |
| Report of Foreign Issuer | April 13, 2020 |
| Report of Foreign Issuer | March 31, 2020 |
| Report of Foreign Issuer | February 27, 2020 |
| Report of Foreign Issuer | February 13, 2020 |
| Report of Foreign Issuer | February 10, 2020 |