Jahr  MPECS Discovery Observations
1993      1         0           13
1994      5         0           28
1995      3         0           10
1996      9         0           37
1997     10         1           39
1998     51        13          228
1999     35         9          196
2000     77        19          526
2001     65         3          340
2002     88         2          452
2003     88         2          312
2004     43         1          106
2005     34         0          106
2006     33         0          105
2007     18         0           53
2008      3         0           14
2009      3         0           10
2010      1         0            3
2011      0         0            0
2012      0         0            0
2013      0         0            0
2014      0         0            0
2015      0         0            0
2016      0         0            0
2017      0         0            0
2018      0         0            0
2019      0         0            0