Annual Report and Proxy Annual Reports Title View 2018 10-K 2018 10-K 1.2 MB 2017 10-K/A 2017 10-K/A 376.7 KB 2017 10-K 2017 10-K 1.2 MB 2016 10-K 2016 10-K 1 MB 2015 10-K 2015 10-K 1.2 MB 2014 10-K 2014 10-K 2.1 MB 2013 10-K 2013 10-K 1.4 MB 2012 10-K 2012 10-K 1.4 MB 2011 10-K 2011 10-K 1.8 MB 2010 10K 2010 10K 2.1 MB 2009 10K 2009 10K 1 MB Proxy Statements Filing date Form View May 11, 2018 DEF 14A View HTML 0001174947-18-000791.pdf 0001174947-18-000791.xls May 2, 2018 PRE 14A View HTML 0001174947-18-000711.pdf 0001174947-18-000711.xls May 1, 2017 DEF 14A View HTML 0001174947-17-000733.pdf 0001174947-17-000733.xls Apr 29, 2016 DEF 14A View HTML 0001174947-16-002561.pdf 0001174947-16-002561.xls Apr 30, 2015 DEF 14A View HTML 0001174947-15-000725.pdf 0001174947-15-000725.xls Apr 29, 2014 DEF 14A View HTML 0001174947-14-000212.pdf 0001174947-14-000212.xls Apr 29, 2013 DEF 14A View HTML 0001174947-13-000218.pdf 0001174947-13-000218.xls Apr 27, 2012 DEF 14A View HTML 0001174947-12-000209.pdf 0001174947-12-000209.xls