| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Jun 2021 | 10 Jun 2021 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Jun 2020 | 11 Jun 2020 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jan 2020 | 07 Jan 2020 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Jun 2019 | 13 Jun 2019 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 May 2019 | 29 May 2019 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jan 2019 | 07 Jan 2019 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Jul 2018 | 13 Jul 2018 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Jun 2018 | 18 Jun 2018 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Jun 2018 | 14 Jun 2018 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2018 | 03 Jan 2018 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Dec 2017 | 27 Dec 2017 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Jun 2017 | 16 Jun 2017 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Apr 2017 | 03 Apr 2017 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Jun 2016 | 16 Jun 2016 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2016 | 05 Jan 2016 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Jul 2015 | 17 Jul 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jul 2015 | 30 Jun 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Apr 2015 | 06 Apr 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Jan 2015 | 13 Jan 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Jan 2015 | 08 Jan 2015 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Jun 2014 | 10 Jun 2014 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jan 2014 | 07 Jan 2014 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jan 2014 | 30 Dec 2013 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jan 2014 | 30 Dec 2013 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Dec 2013 | 20 Dec 2013 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Jul 2013 | 16 Jul 2013 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jun 2013 | 05 Jun 2013 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Apr 2013 | 11 Apr 2013 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Oct 2012 | 17 Oct 2012 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jun 2012 | 06 Jun 2012 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Apr 2012 | 03 Apr 2012 | 000-18183 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Mar 2012 | 27 Mar 2012 | 000-18183 |