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      0         0            0
2006      0         0            0
2007      0         0            0
2008      0         0            0
2009      2         0           27
2010      0         0            0
2011     15         0          169
2012      8         0          162
2013     15         0          331
2014     10         0          291
2015      2         0           72
2016      8         0           87
2017     22         0          351
2018      4         0           64
2019      7         3          208
2020      3         1           98
2021      3         0           14
2022      1         0            5