Netherlands: Greenhouse vegetable area vs. number of farms
Taking the current total area, 4894 ha. and dividing by the number of farms, 1327, the average individual farm greenhouse size is now 3.7 ha. As a comparison, in the most current USA census, the average farm size was 0.1 ha. In Canada, this average was 0.6 ha., and in Australia, 1.2 ha. per farm.
Complete detailed data with reference sources is available in the 2018 International Greenhouse Vegetable Statistics publication at: http://www.cuestaroble.com/statistics.htm