| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 09 Sep 2021 | 07 Sep 2021 | 001-08519 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Feb 2021 | 25 Jan 2021 | 001-08519 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Feb 2020 | 30 Jan 2020 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Feb 2020 | 30 Jan 2020 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jan 2020 | 27 Jan 2020 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Feb 2019 | 28 Jan 2019 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jan 2018 | 25 Jan 2018 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jan 2017 | 26 Jan 2017 | 001-08519 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 26 May 2016 | 28 Jan 2016 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Feb 2016 | 28 Jan 2016 | 001-08519 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jan 2015 | 27 Jan 2015 | 001-08519 |