Overall productivity is variable but, generally speaking, is lower than the production potential of specific forest habitats. State forests have a larger increment (about 2.7 m3/ha on average) than private forests. Low density results in part of the forest resource being, in practical terms, out of reach for any kind of intervention: forest use, forest protection and silviculture. The average road density in Bosnia and Herzegovina is 9.97 m/ha. These densities are significantly below those in other European countries with a similar topography: Switzerland has 40 m/ha, Austria 36 m/ha, Germany 35 m/ha and France 26 m/ha. There were particularly frequent and catastrophic forest fires in 1999, 2000, 2003, 2007 and 2012.