| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Apr 2022 | 01 Apr 2022 | 001-03551 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Apr 2021 | 21 Apr 2021 | 001-03551 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 May 2020 | 01 May 2020 | 001-03551 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2020 | 01 Jan 2020 | 001-03551 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2019 | 01 Jan 2019 | 001-03551 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Dec 2018 | 26 Dec 2018 | 001-03551 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Nov 2018 | 16 Nov 2018 | 001-03551 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2018 | 01 Jan 2018 | 001-03551 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2017 | 01 Jan 2017 | 001-03551 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2016 | 01 Jan 2016 | 001-03551 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2015 | 01 Jan 2015 | 001-03551 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2014 | 01 Jan 2014 | 001-03551 |