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     15         0          131
2002     46         1          493
2003     56         0          407
2004     46         0          355
2005     42         0          359
2006     67         0          500
2007     73         0          504
2008     65         0          565
2009     58         0          533
2010     62         0          431
2011     23         0          558
2012     17         0          418
2013     22         0          549
2014     21         0          656
2015     27         1          612
2016     20         1          647
2017     24         1          731
2018     28         7          649
2019     27         9          774
2020     44        17         1009
2021      4         2          106