Jahr MPECS Discovery Observations 1993 0 0 0 1994 0 0 0 1995 1 0 2 1996 0 0 0 1997 0 0 0 1998 4 1 37 1999 0 0 0 2000 0 0 0 2001 0 0 0 2002 4 1 66 2003 1 0 3 2004 0 0 0 2005 0 0 0 2006 0 0 0 2007 0 0 0 2008 0 0 0 2009 0 0 0 2010 0 0 0 2011 0 0 0 2012 0 0 0 2013 0 0 0 2014 2 0 5 2015 3 0 6 2016 0 0 0 2017 1 0 7 2018 0 0 0 2019 4 3 16 2020 27 21 96 2021 1 1 3