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 4 0 13 2002 49 0 248 2003 58 0 249 2004 19 0 69 2005 17 0 62 2006 17 0 68 2007 22 0 84 2008 31 0 99 2009 5 0 24 2010 4 0 8 2011 1 0 4 2012 5 0 12 2013 11 0 30 2014 22 0 64 2015 11 0 27 2016 3 0 12 2017 5 0 20 2018 3 0 8 2019 3 2 34 2020 4 1 8 2021 1 0 2 2022 0 0 0 2023 0 0 0