The indicator calculates the share of the Eco-industry turnover of total GDP.
Data for 2004 are taken from the Ernst&Young Study (2006): Eco-industry, its size, employment, perspectives and barriers to growth in an enlarged EU",
Data for 2008 comes from Ecorys et al. (2009): "Study on the Competitiveness of the EU eco-industry"
Data for 2012 is based on Thomson One database.
Retrieved from, http://database.eco-innovation.eu/indicators/view/288/1, 26.3.2014