2013

• May 14
• April 2
• January 14

2012

• December 11 (Annual Meeting)
• June 5
• March 27

2011

• December 12 (Annual Meeting)
• September 28
• August 15
• March 8

2010

• October 4 (Annual Meeting)
• May 4

2009

• December 15 (Annual Meeting)
• June 8
• March 2

2008

• December 17
• October 16 (Annual Meeting)
• August 12
• February 12

2007

• November 14 (Annual Meeting)
• April 2
• March 16
• January 8