• 1992 to 1994 1
• 1995 to 1996 0
• 1997 to 1999 6
• 2000 to 2001 4
• 2002 to 2004 6
• 2005 to 2006 2
• 2007 to 2009 7
• 2010 to 2011 3
• 2012 to 2014 4
• 2015 to 2016 0
• 2017 to 2019 2