| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 5/A | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Jan 2022 | 31 Dec 2021 | 000-14384 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2022 | 31 Dec 2021 | 000-14384 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Mar 2021 | 11 Mar 2021 | 000-14384 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Mar 2020 | 11 Mar 2020 | 000-14384 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jun 2018 | 06 Jun 2018 | 000-14384 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Feb 2017 | 13 Feb 2017 | 000-14384 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Jul 2016 | 25 Jul 2016 | 000-14384 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Nov 2015 | 06 Nov 2015 | 000-14384 |