Jahr  MPECS Discovery Observations
1993      0         0            0
1994      0         0            0
1995      0         0            0
1996     10         1           44
1997     19         3           89
1998     33        11          152
1999     42         4          161
2000     26         1          148
2001     28         0          316
2002     75         1          627
2003     56         0          547
2004     35         0          702
2005     24         1          363
2006     23         0          460
2007     37         3          418
2008     24         1          752
2009     16         0          383
2010     13         1          464
2011     19         1          454
2012     10         2          126
2013     17         2          119
2014      5         1           38
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
2022      0         0            0