I was interested in this because it does seem from my anecdotal experience that veganism is growing. So these results are just from a quick search.
The International Dairy Deli Bakery Association put out their annual report, this article summarizes: "More consumers are altering their diets to include more plant-based foods for reasons of health and environmental concern. More are also becoming flexitarians, who regularly eat meatless meals. There’s growth, too, in veganism, a diet that excludes animal products. Vegan meals are hot options in many innovative restaurants and the diet is going mainstream with packaged food manufacturers jumping on the bandwagon." http://www.csdecisions.com/2012/05/02/c ... ful-foods/http://sustainablog.org/2012/03/usmeat- ... n-falling/
Analysis of USDA data shows Americans eating less meat.
This article points to a few reasons why veganism might be a viable market, and has links with stats to back up the claim: http://www.huffingtonpost.com/nil-zacha ... 24363.html