| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 May 2022 | 27 May 2022 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2022 | 19 May 2022 | 000-10661 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jun 2021 | 27 May 2021 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jun 2021 | 27 May 2021 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jun 2020 | 25 Jun 2020 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jun 2020 | 28 May 2020 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jun 2019 | 25 Jun 2019 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2019 | 21 May 2019 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2018 | 22 May 2018 | 000-10661 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jun 2017 | 19 May 2016 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jun 2017 | 23 May 2017 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Mar 2017 | 27 Feb 2017 | 000-10661 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jun 2016 | 19 May 2016 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2016 | 19 May 2016 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 May 2016 | 06 May 2016 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Aug 2015 | 10 Aug 2014 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Aug 2015 | 06 Aug 2015 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 May 2015 | 07 May 2015 | 000-10661 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Aug 2014 | 11 Aug 2014 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Aug 2014 | 11 Aug 2014 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Mar 2014 | 24 Mar 2014 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2013 | 09 May 2013 | 000-10661 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 03 May 2013 | 02 May 2013 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 May 2013 | 02 May 2013 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Feb 2013 | 26 Feb 2013 | 000-10661 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2012 | 22 May 2012 | 000-10661 |