Error building stats for bco

[caufieldjh]

Describe the bug

Retrieving stats for bco yields:

Downloading bco, version 2020-03-27 from KG-OBO: kg-obo/bco/2020-03-27/bco_kgx_tsv.tar.gz
Downloading bco, version 2021-11-14 from KG-OBO: kg-obo/bco/2021-11-14/bco_kgx_tsv.tar.gz
Encountered unresolvable error while generating stats: <class 'ValueError'> - Duplicated values found while building the vocabulary!
Specifically the duplicated values are:
["BCO:0000003", "BCO:0000016", "BCO:0000025", "BCO:0000031", "BCO:0000032", "BCO:0000042", "BCO:0000044", "BCO:0000046", "BCO:0000075", "BCO:0000080", "BCO:0000081"].
The number of duplicates found is 11, as the length of the reverse map is 716 and the length of the map is 705.

Expected behavior

At minimum, skip this graph and move to the next.