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      2         0           54
1999     16         0          291
2000     30         0          911
2001      6         0          204
2002     18         0          406
2003     11         0          310
2004      5         0           98
2005     18         0          760
2006     10         0          300
2007     14         0          479
2008     17         0          720
2009     24         0          756
2010     11         0          391
2011     11         0          513
2012     19         0          908
2013     29         0         2700
2014     14         0         2934
2015      3         0          820
2016      0         0            0
2017      5         0          871
2018      3         0          372
2019      0         0            0
2020      1         0            1
2021      0         0            0
2022      3         0          138
2023      1         0           23
2024      1         1            2