Year Personnel 1985 2200 1989 1000 1990 1000 1991 1000 1992 1000 1993 1000 1994 1000 1995 1600 1996 1600 1997 1620 1998 1600 1999 1600 2000 1600 2001 1600 2002 2300 2003 1300 2004 1000 2005 1000 2007 1000 2008 1000 2009 1320 2010 1320 2011 1320 2012 1320 2013 1320 2014 1320 2015 1320 2016 1450 2017 1000 2018 1450 2019 1000 2020 1000