Data on San Miguel Corporation (Philippines) btwn 1990-1993

Hi, everyone!

I'm doing research on this corporation, San Miguel Corporation, for school. The timeframe given me is until 1993 only. I've already gotten some information (ie. history of the corporation, etc) but I need other data like performance analysis on the company (ie. financial statements, credit rating, etc) during that period. I'd really appreciate it if you could direct me to sites which could give me the data I need. Thanks!