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     28         1          280
2003     57         1         1256
2004     73         4         1613
2005     59         5          976
2006     57         3         1156
2007     27         2          522
2008     19         0          186
2009     18         1          121
2010     25         1          202
2011     22         0          186
2012      4         0           24
2013      4         1           32
2014      7         0           71
2015      1         0            3
2016      3         0           43
2017      2         0           13
2018      0         0            0
2019      8         2           47
2020     11         0          106
2021      0         0            0