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      4         0           23
1999      6         1           30
2000     10         5           50
2001     40        14          186
2002     32         5          277
2003     24         4          277
2004     40         9          464
2005     25         7          223
2006      3         1           21
2007      3         0           45
2008      6         0           25
2009      2         1            7
2010      0         0            0
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
2020      0         0            0
2021      0         0            0