Allstate is reducing auto insurance rates for Illinois policyholders by an average of 5%, according to filings with the state Department of Insurance. Though driving levels have picked up from last spring, when a statewide stay-at-home order left streets and highways empty, miles driven are still about 10-15% below pre-pandemic levels, Allstate said in the filing. The pandemic has changed day-to-day routines for many people, leading to a rise in online shopping and remote work, which has meant fewer drivers on the road, the insurer said. “Once the pandemic recedes, we expect these conditions t…