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      2         0            2
2006      0         0            0
2007      0         0            0
2008     20         0          146
2009     69         0          541
2010     44         0          522
2011     37         0          930
2012     32         0         1316
2013     16         0          592
2014     23         0          606
2015     24         1          576
2016     26         1          756
2017     31         4          730
2018     19         7          872
2019     45        18          873
2020     29        14          475
2021      3         1           90