These WTP values are compared to 1992-values of another Thuenen-study, which is also cited in national policy documents (Elsasser 1996). Intertemporal comparison revealed that since 1992 WTP has decreased from about 50 EUR per person per year to about 30 EUR per person per year, aggregated values decreased from 2.5 Bn. Thus willingness to pay for forest-based recreation exists.