SACRAMENTO -- Wineries toasted a little less success abroad in 2009, but this year shows more promise. U.S. wine exports -- with California accounting for 90% of that total -- were down by volume and value in 2009, according to the San Francisco-based Wine Institute. The institute said 2009 exports totaled 110.4 million gallons, down about 15% from 129.7 million gallons in 2008. The value of wine exported by the United States last year was $912 million, down nearly 10% from more than $1 billion in 2008.