how many times did patient 26057 take a lab immunoglobulin m test in 2105?
select count(*) from labevents where labevents.itemid in ( select d_labitems.itemid from d_labitems where d_labitems.label = 'immunoglobulin m' ) and labevents.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 26057 ) and strftime('%y',labevents.charttime) = '2105'