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      1         0           10
2000      0         0            0
2001      1         0            9
2002     19         1           90
2003      5         0           24
2004      1         0            4
2005      3         0           13
2006      2         0           10
2007      0         0            0
2008      1         0            6
2009      0         0            0
2010      0         0            0
2011      0         0            0
2012      1         1            4
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      1         1            3
2021      3         3           11
2022      0         0            0
2023      0         0            0