| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Aug 2022 | 05 Aug 2022 | 000-03498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Apr 2022 | 18 Apr 2022 | 000-03498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Apr 2021 | 22 Apr 2021 | 000-03498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Apr 2020 | 18 Apr 2020 | 000-03498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Apr 2019 | 18 Apr 2019 | 000-03498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Apr 2018 | 18 Apr 2018 | 000-03498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Jul 2017 | 17 Jul 2017 | 000-03498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Apr 2017 | 18 Apr 2017 | 000-03498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jul 2016 | 30 Jun 2016 | 000-03498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Apr 2016 | 18 Apr 2016 | 000-03498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Apr 2015 | 18 Apr 2015 | 000-03498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Apr 2014 | 18 Apr 2014 | 000-03498 |