The Single Commodity Transfers (SCT) indicator measures support that is directed at specific commodities and creates commodity-specific production incentives. As shown in Figure 1.10, these transfers consist predominantly of market price support and payments per tonne produced, while other categories of support are only marginally provided in commodity-specific forms, e.g. payments based on specific crop area or animal type. On aggregate, 88% of total producer support in OECD countries was provided in the form of transfers to specific commodities in 1986-88, this proportion was 75% in 1995-97, and had declined to 53% by 2011-13 (Table A.8).