State Bank of India (SBI) posted a 15% growth in net profit at Rs 1,222.83 crore for the first quarter ended June 30, 2005 as against Rs 1,058.40 crore for the Q1 of FY-05.The total income for the reporting quarter rose to Rs 10,742.85 crore from Rs 9,205.29 crore for April-June 2004, SBI said in a release today.