| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 30 Dec 2021 | 20 Dec 2021 | 001-15877 | |
| 4 | Open Document | Open Filing | 10 May 2021 | 30 Apr 2021 | 001-15877 | |
| 4 | Open Document | Open Filing | 28 Dec 2020 | 21 Dec 2020 | 001-15877 | |
| 4 | Open Document | Open Filing | 08 Dec 2020 | 07 Dec 2020 | 001-15877 | |
| 4 | Open Document | Open Filing | 17 Dec 2019 | 16 Dec 2019 | 001-15877 | |
| 4 | Open Document | Open Filing | 19 Dec 2018 | 17 Dec 2018 | 001-15877 | |
| 4 | Open Document | Open Filing | 22 Dec 2017 | 18 Dec 2017 | 001-15877 | |
| 4 | Open Document | Open Filing | 07 Jun 2017 | 05 Jun 2017 | 001-15877 | |
| 4 | Open Document | Open Filing | 21 Dec 2016 | 19 Dec 2016 | 001-15877 | |
| 4 | Open Document | Open Filing | 11 May 2016 | 11 May 2016 | 001-15877 | |
| 4 | Open Document | Open Filing | 17 Dec 2015 | 15 Dec 2015 | 001-15877 | |
| 4 | Open Document | Open Filing | 18 May 2015 | 18 May 2015 | 001-15877 | |
| 4 | Open Document | Open Filing | 23 Dec 2014 | 06 Nov 2014 | 001-15877 | |
| 4 | Open Document | Open Filing | 23 Dec 2014 | 22 Dec 2014 | 001-15877 | |
| 4 | Open Document | Open Filing | 24 Apr 2014 | 14 Apr 2014 | 001-15877 | |
| 4 | Open Document | Open Filing | 05 Feb 2014 | 05 Feb 2014 | 001-15877 | |
| 4/A | Open Document | Open Filing | 03 Feb 2014 | 30 Dec 2011 | 001-15877 | |
| 4/A | Open Document | Open Filing | 03 Feb 2014 | 17 Dec 2012 | 001-15877 | |
| 5 | Open Document | Open Filing | 03 Feb 2014 | 31 Dec 2013 | 001-15877 | |
| 5/A | Open Document | Open Filing | 03 Feb 2014 | 31 Dec 2006 | 001-15877 | |
| 5/A | Open Document | Open Filing | 03 Feb 2014 | 31 Dec 2008 | 001-15877 | |
| 5/A | Open Document | Open Filing | 03 Feb 2014 | 31 Dec 2009 | 001-15877 | |
| 5/A | Open Document | Open Filing | 03 Feb 2014 | 31 Dec 2007 | 001-15877 | |
| 5/A | Open Document | Open Filing | 03 Feb 2014 | 31 Dec 2010 | 001-15877 |