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      5         0           31
2001     26         1          141
2002     93        12         1330
2003     88        11         1668
2004     98        22         1377
2005     71         2         1080
2006     82         7          776
2007     20         3          136
2008     21         2          108
2009      4         2           16
2010     12         0           67
2011      7         0           49
2012      4         0           47
2013      4         0           53
2014      1         0            1
2015      2         0            9
2016      0         0            0
2017      0         0            0
2018      0         0            0
2019      0         0            0
2020      6         0          102
2021      1         0           22