This is based on the documented inverse relationship between price and per capita consumption. Indeed, the former increased at a rate of 9% from 2000 to 2010, whereas consumption decreased by an annual average of 7%.
Dicha afirmación se sustenta en la dinámica inversa evidenciada entre la tarifa y el consumo per cápita, ya que mientras la primera se ha incrementado a un ritmo de 9%, el consumo se ha reducido en 7% promedio anual de la década 2000 al 2010.