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      1         0           10
2000     11         3          111
2001     10         0          176
2002     20         1          181
2003     42         2          467
2004     12         4           62
2005      4         2           42
2006      2         1            9
2007      8         1           30
2008      3         2           15
2009      9         1           51
2010      4         0           12
2011     10         0           39
2012     11         0           40
2013      2         0            6
2014      9         6           39
2015      0         0            0
2016      0         0            0
2017      2         1           13
2018      6         4           23
2019      0         0            0
2020      0         0            0
2021      0         0            0
2022      0         0            0