1997 1997 1998 1998 2000 2000 2004 2004 2007 2007 2008-2009 2008-2009 2008 UPWP Amendments As Amended 1/29/08 As Amended 5/6/08 As Amended 07/16/09 2010 2010 As Amended 04.30.10 2011 2011 As Amended 04.08.11 2012 2012 2013 Draft 2013 Draft Revised 06/17/2013 2014 2014 2015 2015 Revised 10/20/14 2016 2016 2017 2017 Revised 2/21/17 2018 2018 Revised 2/20/18 2019 2019 2020 2020 Revised 11/18/19 2021 2021
