Jahr MPECS Discovery Observations 1993 0 0 0 1994 0 0 0 1995 0 0 0 1996 0 0 0 1997 0 0 0 1998 0 0 0 1999 0 0 0 2000 0 0 0 2001 0 0 0 2002 0 0 0 2003 0 0 0 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 20 0 54 2013 23 1 87 2014 43 3 171 2015 51 1 544 2016 20 0 70 2017 11 0 49 2018 36 0 150 2019 4 0 14 2020 0 0 0 2021 0 0 0