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      8         3           40
2006     15         1           97
2007     20         2          105
2008     24         2          146
2009      7         0           38
2010      8         0           59
2011     22         0          121
2012     18         2          104
2013      1         0            4
2014     44         6          210
2015     43         1          239
2016     62        13          374
2017     95        33          489
2018     90        34          476
2019    115        57          574
2020    103        45          489