instruction: how many times did patient 59049 have the platelet count tested since 2105?
response: SELECT COUNT(*) FROM labevents WHERE labevents.itemid IN (SELECT d_labitems.itemid FROM d_labitems WHERE d_labitems.label = 'platelet count') AND labevents.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.subject_id = 59049) AND STRFTIME('%y', labevents.charttime) >= '2105'