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      1         0            3
2006     17         0          107
2007     36         0          254
2008     44         0          327
2009     59         2          495
2010     46         4          468
2011     43         8          391
2012     44         6          441
2013     26         1          316
2014      9         1           85
2015     14         4          292
2016      4         1           36
2017      9         2          158
2018      2         0           16
2019      0         0            0
2020      1         1            6