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      2         1            8
2001     13         0           70
2002      2         0           12
2003     26         1          147
2004      2         0            5
2005      4         4           26
2006      1         1           15
2007      1         0            2
2008      1         0            4
2009      0         0            0
2010      0         0            0
2011      7         5           33
2012      0         0            0
2013     10         0          346
2014     38         0          927
2015     19         0          152
2016     17         2          145
2017     11         2          181
2018     33         6          332
2019     10         0           42
2020     20         1          132
2021     41         2          255
2022     38         5          589
2023      1         0            3