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      0         0            0
2002      0         0            0
2003      0         0            0
2004      0         0            0
2005      0         0            0
2006      0         0            0
2007      0         0            0
2008      0         0            0
2009      0         0            0
2010      0         0            0
2011      0         0            0
2012      0         0            0
2013     22         1          172
2014     29        17          114
2015    109        66          371
2016    130       104          410
2017    104        82          318
2018     69        54          229
2019     76        71          235
2020     32        28          115
2021     38        36          120
2022     79        72          251
2023      1         1            3