| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Feb 2022 | 01 Feb 2022 | 000-16435 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Jan 2021 | 31 Dec 2020 | 000-16435 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jan 2020 | 31 Dec 2019 | 000-16435 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jan 2019 | 31 Dec 2018 | 000-16435 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Jan 2018 | 31 Dec 2017 | 000-16435 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Jan 2017 | 31 Dec 2016 | 000-16435 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Jan 2016 | 31 Dec 2015 | 000-16435 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Jan 2015 | 31 Dec 2014 | 000-16435 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Jan 2014 | 31 Dec 2013 | 000-16435 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jan 2013 | 31 Dec 2012 | 000-16435 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Jan 2012 | 31 Dec 2011 | 000-16435 |