Nearly 1 million more young adults have obtained health insurance since the 2010 healthcare law began requiring insurers to let adult children stay on their parents' plans until age 26, according to government data released Wednesday. The jump in enrollment caused the share of young adults who are uninsured to drop from 34% at the start of 2010 to 30% — or 9.1 million people — by March of this year, according to a national interview survey by the Centers for Disease Control and Prevention. A Gallup poll also unveiled Wednesday pointed to an almost identical pattern. Young adults remain more likely to go without health insurance than any other age group. Still, after the recent stream of dismal poverty and unemployment statistics, Secretary of Health and Human Services Kathleen Sebelius welcomed Wednesday's findings as "a really great achievement."