The Columbus Dispatch writes that rates among major insurance providers rose by 4.3 percent in 2014. This marks the lowest rate increase since 2007. Published on August 3, 2015 in Ohio insurance customers enjoy lower rate increases due to calm weatherFull resolution (500 × 334) The Columbus Dispatch writes that rates among major insurance providers rose by 4.3 percent in 2014. This marks the lowest rate increase since 2007. The Columbus Dispatch writes that rates among major insurance providers rose by 4.3 percent in 2014. This marks the lowest rate increase since 2007.