| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jan 2022 | 06 Jan 2022 | 000-32891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jun 2021 | 27 May 2021 | 000-32891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jun 2020 | 09 Jun 2020 | 000-32891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 May 2020 | 21 May 2020 | 000-32891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Nov 2019 | 08 Nov 2019 | 000-32891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2019 | 30 May 2019 | 000-32891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Aug 2018 | 22 Aug 2018 | 000-32891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 May 2018 | 24 May 2018 | 000-32891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 May 2017 | 25 May 2017 | 000-32891 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 10 Jan 2017 | 01 Jan 2017 | 000-32891 |