| Date | Acquired | Amount |
|---|---|---|
| Oct 04, 2017 | Undisclosed amount | |
| Jul 20, 2017 | Undisclosed amount | |
| Jul 08, 2017 | $ 10,000,000 | |
| Jun 16, 2017 | $ 13,700,000,000 | |
| Mar 27, 2017 | $ 580,000,000 | |
| Mar 06, 2017 | Undisclosed amount | |
| Jan 09, 2017 | $ 20,000,000 | |
| Nov 23, 2016 | Undisclosed amount | |
| Sep 20, 2016 | Undisclosed amount | |
| Jul 14, 2016 | Undisclosed amount | |
| Feb 16, 2016 | Undisclosed amount | |
| Dec 01, 2015 | Undisclosed amount | |
| Sep 25, 2015 | Undisclosed amount | |
| Sep 03, 2015 | $ 500,000,000 | |
| Apr 30, 2015 | Undisclosed amount | |
| Apr 10, 2015 | Undisclosed amount | |
| Apr 10, 2015 | Undisclosed amount | |
| Mar 12, 2015 | Undisclosed amount | |
| Jan 22, 2015 | $ 370,000,000 | |
| Oct 27, 2014 | Undisclosed amount | |
| Aug 25, 2014 | $ 970,000,000 | |
| Apr 10, 2014 | Undisclosed amount | |
| Feb 06, 2014 | Undisclosed amount | |
| Oct 01, 2013 | Undisclosed amount | |
| May 13, 2013 | Undisclosed amount | |
| May 13, 2013 | Undisclosed amount | |
| Apr 17, 2013 | $ 26,000,000 | |
| Mar 29, 2013 | Undisclosed amount | |
| Jan 24, 2013 | Undisclosed amount | |
| Jul 02, 2012 | Undisclosed amount | |
| Jun 15, 2012 | £ 200,000,000 | |
| Jun 04, 2012 | Undisclosed amount | |
| Mar 19, 2012 | $ 775,000,000 | |
| Feb 15, 2012 | $ 1,200,000,000 | |
| Jan 31, 2012 | Undisclosed amount | |
| Dec 28, 2011 | Undisclosed amount | |
| Sep 08, 2011 | Undisclosed amount | |
| Jul 28, 2011 | Undisclosed amount | |
| Jul 04, 2011 | Undisclosed amount | |
| Nov 08, 2010 | $ 545,000,000 | |
| Oct 07, 2010 | € 70,000,000 | |
| Sep 22, 2010 | Undisclosed amount | |
| Jun 30, 2010 | Undisclosed amount | |
| Feb 03, 2010 | Undisclosed amount | |
| Jun 16, 2009 | Undisclosed amount | |
| Apr 28, 2009 | Undisclosed amount | |
| Apr 01, 2009 | Undisclosed amount | |
| Oct 22, 2008 | Undisclosed amount | |
| Aug 25, 2008 | Undisclosed amount | |
| Aug 01, 2008 | Undisclosed amount | |
| Jun 25, 2008 | Undisclosed amount | |
| Jan 31, 2008 | Undisclosed amount | |
| May 23, 2007 | Undisclosed amount | |
| May 01, 2007 | Undisclosed amount | |
| Oct 01, 2006 | Undisclosed amount | |
| Feb 27, 2006 | Undisclosed amount | |
| Jul 11, 2005 | Undisclosed amount | |
| Apr 21, 2005 | Undisclosed amount | |
| Apr 04, 2005 | Undisclosed amount | |
| Aug 19, 2004 | $ 75,000,000 | |
| Dec 04, 2002 | Undisclosed amount | |
| Dec 01, 2001 | Undisclosed amount | |
| Dec 31, 1999 | Undisclosed amount | |
| Nov 30, 1999 | Undisclosed amount | |
| Nov 30, 1999 | Undisclosed amount | |
| Oct 04, 1999 | $ 23,000,000 | |
| Jun 11, 1999 | $ 101,700,000 | |
| May 23, 1999 | $ 250,000,000 | |
| Apr 27, 1999 | Undisclosed amount | |
| Apr 12, 1999 | Undisclosed amount | |
| Oct 15, 1998 | Undisclosed amount | |
| Aug 04, 1998 | Undisclosed amount | |
| Aug 04, 1998 | Undisclosed amount | |
| Apr 27, 1998 | Undisclosed amount | |
| Apr 27, 1998 | Undisclosed amount |