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      7         0           55
2012     39        19          221
2013     74        34          297
2014     55        24          176
2015     59        28          318
2016     65        35          308
2017     64        39          309
2018     34        19          158
2019     39        25          206
2020     47        31          247
2021     26        13          145
2022     21        13           95
2023      0         0            0