The appellation of origin of tequila is celebrating its 40th anniversary this year, marking its official registration in Mexico. That was followed in 1978 by its registry internationally.
The Tequila Regulatory Council says that in 1995 there were only 35 businesses certified to produce tequila, and output was 104.3 millions of litres annually. There are now 160 firms producing 226 million litres.
The United States is the principal consumer at 140 million litres a year. Germany is next at six million.