It is also used for sugarcane, cotton, rice and nut trees in Australia (Deloitte Access, 2013), and olive trees, vineyards, and for greenhouse fruits and vegetables in Spain and Greece (Garrido et al., This exceeds previous figures from 2002, which reported that groundwater irrigation covered at least 30% in only a third of OECD countries (OECD, 2006). Shares vary from a few per cent in countries with relative abundance of surface water (e.g. Estonia, Norway), to higher shares for countries relying significantly on groundwater for irrigation (e.g. Germany, Denmark).