Comparing data from National Surveys of Family Growth in 2002 and between 2006-10, the study shows a consistent decline in sexual partners across most ethnicities and age groups, particularly men under the age of 24.
Key findings include:
* Between 2002 and 2010, the mean number of sexual partners among men who have sex with men (MSM) fell from 2.9 to 2.3
* Among men under 24, 2.9 to 2.1; among men 35-44, 3.0 to 2.2
The study also gives stats on a bunch of different research such as condom use and men who hire prostitutes.