| 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 | 28 Sep 2020 | 24 Sep 2019 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 May 2019 | 02 May 2019 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 May 2018 | 01 May 2018 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2017 | 02 May 2017 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 May 2016 | 29 Apr 2016 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2015 | 30 Apr 2015 | 001-08519 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Oct 2014 | 20 Oct 2014 | 001-08519 |