Incorrect progress reporting for Semantic Scholar loader

[olegs]

26 Mar 2021 20:41:34,456 [main] SemanticScholarLoader INFO  Started parsing articles /home/student/ss/s2-corpus-045.gz
26 Mar 2021 20:41:34,457 [main] ArchiveParser   INFO  Collecting stats in /home/student/.pubtrends/semantic_scholar_stats.tsv
26 Mar 2021 20:41:48,247 [main] ArchiveParser   INFO  Finished batch 1 adding (/home/student/ss/s2-corpus-045.gz) 1%
26 Mar 2021 20:42:02,617 [main] ArchiveParser   INFO  Finished batch 2 adding (/home/student/ss/s2-corpus-045.gz) 2%
26 Mar 2021 20:42:16,444 [main] ArchiveParser   INFO  Finished batch 3 adding (/home/student/ss/s2-corpus-045.gz) 3%
26 Mar 2021 20:42:18,999 [main] ArchiveParser   INFO  Finished batch 4 adding (/home/student/ss/s2-corpus-045.gz) 4%
26 Mar 2021 20:42:18,999 [main] ArchiveParser   INFO  Writing stats to /home/student/.pubtrends/semantic_scholar_stats.tsv
26 Mar 2021 20:42:19,000 [main] SemanticScholarLoader INFO  Finished parsing articles