in total, count the number of times patient 79348 had been prescribed furosemide in this year.
select count(*) from prescriptions where prescriptions.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 79348 ) and prescriptions.drug = 'furosemide' and datetime(prescriptions.startdate,'start of year') = datetime(current_time,'start of year','-0 year')