The Department has not commissioned or evaluated any studies which seek to demonstrate a direct causal link between recent investment in contraception and the decline in abortion rates over the same period. However, research undertaken in the United States found that 86 per cent. of the reduction in the US teenage birth rate between 1995 and 2002 was due to increased contraceptive use Santelli et al, “Explaining Recent Declines in Adolescent Pregnancy in the United States: The Contribution of Abstinence and Improved Contraception Use”, American Journal of Public Health, January 2007, vol. 97, No. 1. A copy has been placed in the Library.