In my article Research on Accessible Travel, I wrote about some of the findings in a report published by the Ontario (Canada) Ministry of Tourism in July 2007.
There are a number of statistics from the U.S. and Canada in that report. The most impressive one, for me, was right at the start. Over 30 million Americans (U.S.A.) rated accessibility as being something important to them when they travel.
The population of Canada is about 33 million. The population of California is about 36 million.
It's like everyone in Canada, or everyone in California, wants accessibility.
Another calculation estimated that roughly one in four travellers is looking for accessibility.
These are from market research done to guide the tourism industry in Canada and the U.S.