Please Select Year for Rules: Select Year Most Notable Rule changes over the years 1952 Rules 1979 Rules 1999 Rules 2000 Rules 2002 Rules 2003 Rules 2004 Rules 2005 Rules 2006 Rules 2007 Rules 2008 Rules 2009 Rules 2010 Rules 2011 Rules 2012 Rules 2013 Rules 2014 Rules 2015 Rules 2016 Rules 2017 Rules 2018 Rules 2019 Rules 2020 Rules 2021 Rules