In the United States, inching towards the century-mark a staggering 99 banks have collapsed up so far this year, indicating that the banking sector continues to be shaky. This year's toll is about four-fold that of 25 failures in 2008, with an average of nearly 10 banks collapsing every month.The Federal Deposit Insurance Corporation (FDIC), which insures deposits of more than 8,000 financial institutions, said 416 entities are at risk of failing. On Friday, the authorities shut down San Joaquin Bank, making it the fourth bank failure this month. The failure would cost FDIC's Deposit Insurance Fund 103 million dollars. The three other entities which collapsed this month are Warren Bank, Jennings State Bank and Southern Colorado National Bank. The four failures together would result in anexpense of 396 million dollars. Even as the economy is showing signs of stabilisation,bank failures are anticipated to rise in the wake of increased unemployment which could result in higher defaults.