Jahr  MPECS Discovery Observations
1993      0         0            0
1994      0         0            0
1995      0         0            0
1996      1         0            3
1997      0         0            0
1998      1         0            4
1999      0         0            0
2000      0         0            0
2001      3         0           15
2002      2         0           10
2003      0         0            0
2004      0         0            0
2005      0         0            0
2006      0         0            0
2007      0         0            0
2008      2         0           10
2009      0         0            0
2010      0         0            0
2011      0         0            0
2012      1         0            3
2013      0         0            0
2014      0         0            0
2015     10         0           36
2016     19         0          173
2017     21         0          198
2018     18         0           94
2019      7         0           78
2020     16         0          192
2021     22         0          141
2022      8         0           54