The prevalence of at least one chronic disease (upper Fig) and the prevalence of multimorbidity (lower Fig) in the general population of 25 years and older, over the period 2001–2011.

Legend: grey solid line = GP registered diagnoses; grey dotted line = GP registered diagnoses, prevalence standardized for the Dutch population in 2011; black solid line = self-reported chronic diseases; black dotted line = self-reported chronic diseases, prevalence standardized for the Dutch population in 2011.