The framework allows progress towards green growth to be measured using internationally comparable data, embedded in a conceptual framework that is able to be communicated to a wide audience of policy makers and the public at large (OECD, 201 la). It is important to recognise that no single indicator will be effective in capturing progress towards green growth, and not all of the indicators presented are measurable today. The OECD framework contains 25 separate indicators, arranged into 5 themes.