The annual number of new HIV infections among adults and adolescents decreased by 50% or more in 26 countries between 2001 and 2012. …recent surveys in several countries in sub‑Saharan Africa have detected decreases in condom use and/or an increase in the number of sexual partners.
…Across sub-Saharan Africa, diverse countries have achieved notable reductions in HIV prevalence among young people (15–24 years). In sub-Saharan Africa, HIV prevalence among young women and men fell by 42% from 2001 to 2012.
So, as condom use has apparently decreased in sub-Saharan Africa, the subcontinent with the most visible epidemic of HIV/AIDS, there has been an overall global decrease in infection?
[Source: UNAIDS Global Report 2013 (PDF)]