The Iowa Leading Indicators index slipped to 106.5 in September after four consecutive months of increases, the Iowa Department of Revenue said today in a new report. Despite that drop, the percentage change in the monthly index rounded up to zero. Additionally, the six-month annualized change in the index remained flat in September and was positive (1.6 percent) for a fifth consecutive month. Manufacturing hours led the four positive contributors to the eight-factor index for September. Also, the 12-month moving average of weekly manufacturing hours reached its highest value since June 2012, suggesting strong demand for Iowa manufacturers. The new orders index dropped to 66.0, the lowest value in 2013, but still above its value of 59.6 from one year ago. After being the largest positive contributor in August, diesel fuel consumption was the largest negative contributor in September, decreasing 3.1 percent from the year-ago period.