Chubb Reports Second Quarter Per Share Net Income of $7.35, Up 34.6%, and Record Per Share Core Operating Income of $6.14, Up 14.1%; Consolidated Net Premiums Written of $14.2 Billion, Up 6.3%, or 7.1% in Constant Dollars, with P&C and Life Insurance Up 5.8% and 17.3%, Respectively; P&C Combined Ratio of 85.6%