For soybeans, another important staple crop food, the situation is slightly different. Source: OECD, PSE/CSE database, 2012. A similar scheme existed for dairy imports, which explains the high producer SCT for milk in 1990-94. The %SCT indicator also shows the impact of export taxes on palm oil, which have pushed returns to growers in 2006-10 below what they would have been in the absence of the tax.