What year is it on this web site? Some time in the mid-60's?
The 4% figure has been widely accepted for some time. You can quibble about the terminology and methodology if it amuses you, but the greater question is: Did you have a particular numerical threshold in mind above which equal rights under the law for a minority is appropriate?
Jews are 3% of the population and are treated equally. If there was a published survey which showed that gays constitute at least 3%, THEN do we get equal protection under the law? Please advise.
Also, please give up on the marriage-procreation blather. Married people don't always have children. People who have children aren't always married. They are not legally linked.