Heterosexuals 18-24 are the most sexually active. The logic of the activists is that if all sex is equally dangerous, then those who have the most sex are at the most risk. However, most of the people who present this data to you will have no clue how it was conjured. New cases of HIV are going up each year. The CDC says there's no way to know if you have HIV other then anti-body testing.
People rush out to test.
If more people test, more will show up positive. It's like if you did a employment poll each year and forgot to mention that you polled 1 million people more each year and that was the only reason employment appeared to be going up. Since HIV isn't acute and can take well over 10 years to show any physical signs it should be treated as any other poll and be measured by ratio and not raw numbers. The media never mentions this glaring flaw. I always have.