Jahr  MPECS Discovery Observations
1993      0         0            0
1994      0         0            0
1995      0         0            0
1996      0         0            0
1997      1         0           10
1998     22         0          113
1999     22         3          132
2000     20         5          122
2001     17         4          130
2002     16         0          105
2003     48         1          491
2004     38         1          322
2005     19         0          140
2006      0         0            0
2007      2         0            9
2008     16         0          102
2009     10         0           63
2010     29         0          149
2011      7         0           24
2012      4         0           25
2013      0         0            0
2014      0         0            0
2015      9         0           70
2016      9         0           54
2017     10         0           74
2018      7         0           34
2019      5         4           38
2020      8         2           34
2021      3         0           10
2022      1         0            4
2023      0         0            0