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 48 0 142 2001 29 0 74 2002 37 1 112 2003 15 0 43 2004 26 0 74 2005 12 1 25 2006 9 0 22 2007 4 0 11 2008 0 0 0 2009 1 0 2 2010 2 0 5 2011 1 0 2 2012 1 0 2 2013 1 0 2 2014 3 0 6 2015 1 0 2 2016 0 0 0 2017 1 0 2 2018 5 0 10 2019 5 0 12 2020 1 0 2 2021 2 0 2 2022 2 1 4 2023 0 0 0