Chubb Reports Second Quarter Per Share Net Income and Core Operating Income of $5.46 and $5.38, Up 26.4% and 9.3%, Respectively; Consolidated Net Premiums Written of $13.4 Billion, Up 11.8%, or 12.3% in Constant Dollars, with P&C Up 10.6% and Life Insurance Up 27.6%; P&C Combined Ratio of 86.8%; Record Year-to-Date Per Share Net Income and Core Operating Income of $10.68 and $10.78, Up 20.8% and 15.7%, Respectively