164 countries home to certified organic production total $63.8 billion sales
"According to the latest FiBL-IFOAM survey on certified organic agriculture worldwide, as of the end of 2012, data on organic agriculture are available from 164 countries (up from 162 in 2011)...There were 37.5 million hectares of organic agricultural land in 2012, including in- conversion areas."
See table Organic Agriculture 2014: Key Indicators and Leading Countries: Organic market size, 2012: 63.8 billion US dollars
FiBL and IFOAM, “The World of Organic Agriculture: Statistics and Emerging Trends 2014,” February 2014, 23-25, accessed October 29, 2014, https://www.fibl.org/fileadmin/documents/shop/1636-organic-world-2014.pdf.