Jahr MPECS Discovery Observations 1993 0 0 0 1994 0 0 0 1995 2 0 16 1996 7 1 19 1997 12 1 43 1998 10 1 31 1999 8 0 35 2000 2 1 11 2001 0 0 0 2002 46 0 515 2003 14 0 132 2004 11 0 48 2005 2 0 34 2006 11 0 84 2007 1 0 9 2008 57 0 482 2009 55 0 379 2010 47 0 523 2011 21 0 447 2012 21 0 519 2013 20 0 434 2014 21 0 486 2015 15 0 457 2016 15 0 439 2017 14 0 598 2018 13 0 282 2019 12 4 388 2020 16 3 281 2021 1 0 26