instruction: when patient 1819 was admitted to the hospital via the phys referral/normal deli for the last time this year?
response: SELECT admissions.admittime FROM admissions WHERE admissions.subject_id = 1819 AND admissions.admission_location = 'phys referral/normal deli' AND DATETIME(admissions.admittime, 'start of year') = DATETIME(CURRENT_TIME(), 'start of year', '-0 year') ORDER BY admissions.admittime DESC LIMIT 1