January 2011	April 2011	15 July 2011	1 August 2011	15 August 2011	15 September 2011
1 November 2011	15 January 2012	1 February 2012	1 March 2012	15 April 2012	15 May 2012
1 September 2012	15 September 2012	1 October 2012	15 October 2012	15 November 2012	15 December 2012
1 January 2013	15 January 2013	May 2013	1 July 2013	15 September 2013	15 November 2013
February 2014	21 February 2014	April 2014	16 April 2014	27 July 2014	7 August 2014
7 November 2014