| Filed On | Filing |
|---|---|
| 19 Jun 2019 | SC 13G |
| 02 Feb 2018 | SC 13G |
| 14 Feb 2017 | TCI FUND MANAGEMENT LTD |
| 11 Feb 2016 | SC 13G |
| 17 Feb 2015 | SC 13G |
| 19 Dec 2014 | SC 13G |
| 11 Feb 2014 | SC 13G |
| 10 Dec 2013 | SC 13G |
| 30 Jan 2013 | SC 13G |
| 14 Feb 2011 | SC 13G |
| 29 Jan 2010 | SC 13G |
| 12 Feb 2009 | SC 13G |
| 11 Feb 2008 | SC 13G |
| 11 Feb 2008 | SC 13G |
| 15 Feb 2007 | SCHEDULE 13G |
| 14 Feb 2007 | SCHEDULE 13G |
| 14 Feb 2005 | SC 13G |
| 12 Aug 2002 | DOC ONE |
| 12 Feb 2001 | SC 13G |
| 07 Apr 2000 | SC 13G |
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