http://www.cdfa.ca.gov/statistics/
California Agricultural Exports
In 2013, California's agricultural exports amounted to $21.24 billion in value, representing a 15 percent increase over the previous year. In terms of value, California's top three agricultural exports are almonds, dairy and dairy products, and wine. California's share of total US Agricultural exports for 2013 was 14.7 percent or slightly more than the 13.1 percent share reported the previous year.
USDA/NASS Crop Year Report
In 2013, the most recent year for which a full crop year report is available, California's 77,900 farms and ranches received $46.4 billion for their output.
California's agricultural abundance includes more than 400 commodities. The state produces nearly half of US-grown fruits, nuts and vegetables. Across the nation, US consumers regularly purchase several crops produced solely in California.
California's top-ten valued commodities for 2013 are:
Milk — $7.6 billionAlmonds — $5.8 billionGrapes — $5.6 billionCattle, Calves — $3.05 billionStrawberries — $2.2 billionWalnuts — $1.8 billionLettuce — $1.7 billionHay — $1.6 billionTomatoes — $1.2 billionNursery plants— $1.2 billion