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      1         0            3
1999      4         0           10
2000      6         0           16
2001      7         0           28
2002     13         0           59
2003      3         0           18
2004     13         0          117
2005      3         0           31
2006      0         0            0
2007      2         0            7
2008      6         0           51
2009      7         0           44
2010      2         0           34
2011      1         0            8
2012      2         0           14
2013      1         0           13
2014      0         0            0
2015      0         0            0
2016      0         0            0
2017      0         0            0
2018      0         0            0
2019      0         0            0
2020      0         0            0
2021      0         0            0