count the number of times patient 18677 has received a lab test with atypical lymphocytes in 2105.
select count(*) from labevents where labevents.itemid in ( select d_labitems.itemid from d_labitems where d_labitems.label = 'atypical lymphocytes' ) and labevents.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 18677 ) and strftime('%y',labevents.charttime) = '2105'