| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2021 | 12 May 2021 | 001-12209 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 May 2020 | 13 May 2020 | 001-12209 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Mar 2020 | 10 Mar 2020 | 001-12209 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 May 2019 | 15 May 2019 | 001-12209 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 May 2018 | 16 May 2018 | 001-12209 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jan 2018 | 30 Jan 2018 | 001-12209 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Aug 2017 | 10 Aug 2017 | 001-12209 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2017 | 17 May 2017 | 001-12209 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Dec 2016 | 30 Nov 2016 | 001-12209 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Dec 2016 | 30 Nov 2016 | 001-12209 |