The year-end 1997 report shows new AIDS cases declined yet again from 105,828 in 1993 to 79,897 in 1994 to 73,767 in 1995 to 68,808 in 1996 and down again to 60,634 in 1997. This means the risk was only heterosexual sex or they refused to specify any other co-factor. Lets assume these non-specified risks are ALL just from heterosexual sex. This is not trying to be racist just reported the facts.
Cases are also highly concentrated in a few large cities such as New York and District of Columbia.
The number of women infected is growing however in the last few years. Of these many had sex with injecting drug users etc, but lets include all of these to compare to other risks. For Most Female Cases Studies show that anal sex is much more common than many might think. All this easily explains why the heterosexual male to female transmission rate is so much higher than female to male. Additionally, the majority of respondents reported using condoms either infrequently or not at all.