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      7         2           22
2002      0         0            0
2003      0         0            0
2004      0         0            0
2005      2         0           21
2006      2         0           27
2007      8         1          153
2008      0         0            0
2009      5         0           36
2010     12         3          406
2011      4         0           64
2012     24         0          504
2013     21         0          548
2014      3         1           43
2015     14         3          333
2016     22         2          666
2017     21         5          522
2018      9         6           64
2019     20         8          214
2020      3         1           27