http://thenationalcampaign.org/data/landing 少女懷孕率大幅下降 estimated http://thenationalcampaign.org/data/landing state data portal Teen Birth Rate state data portal http://thenationalcampaign.org/data/landing National & State Data state by state data http://thenationalcampaign.org/data/landing 64 percent drop http://thenationalcampaign.org/data/landing https://thenationalcampaign.org/data/landing 67 percent since 1991 The National Campaign to Prevent Teen Pregnancy The national Campaign disproportionate rates of teen pregnancy remain TheNationalCampaign.org Teen Birth Rate http://thenationalcampaign.org/data/landing pregnant http://thenationalcampaign.org/data/landing theNationalCampaign.org