Digging into the data behind the headlines of the recently revised-downward U.S. census figures on same-sex households reveal that they increased only a minuscule amount over the past 10 years:
The Census Bureau now says the 2010 Census found that there were 131,729 same-sex married couple households and 514,735 same-sex unmarried partner households in the United States--for a total of 646,464 same-sex-couple households.
In 2000, the number of same-sex households, as calculated by the 2000 Census, was 594,391. --CNSNews
In other words, only 52,073 more same-sex households over a period of 10 years, so 5,207 per year.
In the same time-span, the total U.S. population increased by over 27,000,000, or 2,700,000 a year.