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      4         0           13
2002     49         0          248
2003     53         0          234
2004     18         0           67
2005     17         0           62
2006     17         0           68
2007     22         0           84
2008     31         0           99
2009      5         0           24
2010      4         0            8
2011      1         0            4
2012      3         0            8
2013     11         0           30
2014     21         0           62
2015      7         0           19
2016      3         0           12
2017      5         0           20
2018      3         0            8
2019      3         2           34
2020      4         1            8
2021      1         0            2