Index falls two points; remains above 52-year averageBISMARCK, ND – The NFIB Small Business Optimism Index declined 2.0 points in September to 98.8. This was the first decline in three months, though it remains above the survey’s 52-year average of 98. The Uncertainty Index rose seven points from August to 100, the fourth-highest reading in over 51 years.“Optimism a...