29 financial stability report may 2003 2 national system 1 introduction the evolution and paths of aggregate positions sfn during second half 2002 become particularly relevant when scenario crisis experienced by domestic economy is considered this period level internal external uncertainty elevated pressure on prices volatility exchange rate government securities affecting rise in interest rates assets liabilities net worth at end december came to r 255 billion reflecting growth 9 5 year banking held 98 credit cooperatives nonbanking institutions 8 demonstrating that structure essentially made up insofar as concentration concerned largest banks pointed 10 20 50 corresponded 74 4 88 96 7 total respectively encompasses conglomerates independent