when was the first time during the last year that patient 19040 was diagnosed with aphasia?
select diagnoses_icd.charttime from diagnoses_icd where diagnoses_icd.icd9_code = ( select d_icd_diagnoses.icd9_code from d_icd_diagnoses where d_icd_diagnoses.short_title = 'aphasia' ) and diagnoses_icd.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 19040 ) and datetime(diagnoses_icd.charttime,'start of year') = datetime(current_time,'start of year','-1 year') order by diagnoses_icd.charttime asc limit 1