The Australian wine industry is the world's fourth largest exporter of wine with approximately 750 million litres a year to the international export market with only about 40% of production consumed domestically. Wine is produced in every state, with more than 60 designated wine regions totaling approximately 160,000 hectares; however Australia's wine regions are mainly in the southern, cooler parts of the country, with vineyards located in South Australia, New South Wales, Victoria, Western Australia, Tasmania and Queensland. The wine regions in each of these states produce different wine varieties and styles that take advantage of the particular terroir such as: climatic differences, topography and soil types. With the major varieties being predominantly Shiraz, Cabernet Sauvignon, Chardonnay, Merlot, Semillon, Pinot noir, Riesling, and Sauvignon Blanc. Wines are often labeled with the name of their grape variety, which must constitute at least 85 percent of the wine.