 I'm David Brancaccio. The government's key measure of inflation this morning came in lower than expected. The consumer price index fell a tenth of a percent in June, meaning prices rose just three percent in a year. That's growth in the economy slowing, and it's a strong argument for interest rates dropping in September. The bond market moved up today, pulling the 10-year interest rate down to 4.19 percent. Add that to the data showing incomes rising 3.9 percent in the year through