Corrigendum to "The evolution of energy efficiency in Switzerland in the period 2000-2016" [Energy 191 (2020)]

The authors would like to clarify that after the acceptance of the article in the journal, we noticed that one of the supporting results presented in the paper could be misinterpreted. The estimation of rate at which GDP of Switzerland changed per year changes depending upon the currency in which the rate of change was measured (i.e. while converting from CHF to EUR). Although the change is trivial, we noticed that it might cause confusion to some readers. In order to avoid the confusion, we would like to add the following clarification to section 3.5 (for the number ""4% p.a.") ""Clarification: The average annual rate of growth of GDP is estimated at 2.2% when measured in the national currency (CHF). The difference to the value given in the first sentence of section 3.5 is a consequence of strengthening of the currency CHF against the EURO during 2000-2016"". The authors would like to apologise for any inconvenience caused.