43% of restaurant chefs are foreign-born. So are 25% restaurant managers, and 29% of businesses in the combined restaurant/hotel sector are immigrant-owned. (from here.)

66% of consumers eat a wider variety of ethnic cuisines now than five years ago. 80% of consumers eat at least one ethnic cuisine per month. 17% of consumers eat seven or more cuisines on a monthly basis. (from here.)

Younger consumers are more likely than older consumers to be frequent eaters; nearly half of consumers 18-44 eat at least four ethnic cuisines each month, compared to fewer than one in four of those 65 or older. Families with children are also more likely to eat a wider range of cuisines regularly. (From here.)