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(CBS News) Whenopen enrollment beginson the online, state-based marketplaces established under Obamacare, premiums nationwide are expected to be around 16 percent lower than originally predicted, the U.S. Health and Human Services Department said in a new report released Wednesday.

The administration sees the lower-than-expected premiums as a sign that the plan to drive down health costs for consumers by increasing competition is working. They also point to the insurers entering the individual health insurance market for the first time as a sign of strong competition, as well as the variety of plans that will be available on the market.