Virginia is also the country's third-largest producer of seafood as of 2018[ [update]], with sea scallops, oysters, Chesapeake blue crabs, menhaden, and hardshell clams as the largest seafood harvests by value, and France, Canada, and Hong Kong as the top export destinations. Commercial fishing supports 18,220 jobs as of 2020[ [update]], while recreation fishing supports another 5,893. Eastern oyster harvests had increased from 23,000 bushels in 2001 to over 500,000 in 2013, but fell to 248,347 in 2019 because of low salinity in coastal waters due to heavy spring rains. Those same rains however made 2019 a record wine harvest for vineyards in the Northern Neck and along the Blue Ridge Mountains, which also attract 2.3million tourists annually. Virginia has the seventh-highest number of wineries in the nation, with 307 as of January 2020[ [update]]. Cabernet franc and Chardonnay are the most grown varieties.