At the same time, Table 1.1 also shows that agriculture accounts for a very large share of total withdrawals, amounting to an estimated 70% in 2010. This aggregate estimate, however, combines very different rates across countries and equally variable rates at subnational levels (Margat and van der Gun, 2013). As shown in Figure 1.1, agriculture use represents a significant portion of groundwater use (more than 45%) in at least nine OECD countries: Israel, Chile, Korea, Turkey, Australia, the United Sates, Spain, Mexico and Portugal.