Jahr  MPECS Discovery Observations
1993      1         0            4
1994      0         0            0
1995      0         0            0
1996      2         0            8
1997      0         0            0
1998      2         0            6
1999      1         0            2
2000      0         0            0
2001      9         2           21
2002      4         0           13
2003      5         0           33
2004      1         0           11
2005      1         0            3
2006      3         0           10
2007      3         1           16
2008      0         0            0
2009      0         0            0
2010      3         1           14
2011      1         0            5
2012      0         0            0
2013      2         0           13
2014      0         0            0
2015     12         0          129
2016     36         5          445
2017     87        28         1019
2018     16         0          139
2019     20         8          134
2020      6         3           73
2021      1         0            9