This article in Forbes says it did. Did they pick and choose their data, or is that an accurate assessment?
Ample Evidence Shows Average Premiums and Spending Exploded After ACA Implementation in 2014
While it is important to look at data for several years after 2013 to assess the impact of the ACA, comparing individual market premiums in 2013 with those in 2014—the year its key changes took effect—provides an approximation of the initial change. The Manhattan Institute compared the average of the five least expensive pre-ACA plans in 2013 with the least expensive plans available on exchanges in 2014. Manhattan’s researchers adjusted the pre-ACA plan premiums upward to account for the population facing surcharges or denied coverage because of a pre-existing condition. Manhattan estimated that the average state individual market premium increased 41% between 2013 and 2014. A county-level analysis suggested that premiums increased by 49%.