Hollywood's top lobbyist said Tuesday the American industry will increasingly work with the growing Chinese private film sector to pressure Beijing to loosen its movie quotas and better combat piracy. The top American studios want to show more films in the booming Chinese market, but have been frustrated by Beijing's annual quota of 20 blockbusters on a revenue-sharing basis. Chinese films accounted for more than 60 percent of the domestic box office revenues of 4.3 billion Chinese yuan ($630 million) in 2008. “I do not think there has been enormous progress made on that issue,” Motion Picture Association of America Chairman and Chief Executive Dan Glickman told The Associated Press in an interview in Hong Kong after attending the Shanghai International Film Festival. He said he expects to see more Chinese-Hollywood co-productions, which are exempt from the import quota.