Purchasing power developments per person are calculated as year-on-year percentage changes in that person’s standardised disposable household income, adjusted for price changes. These percentage-based income changes are ranked from smallest to greatest, with the ‘middle’ or median value reflecting the purchasing power development of that particular (sub)population. Personal (dynamic) purchasing power may fluctuate for all kinds of reasons. For example, incomes may change as a result of a wage increase, a promotion, taking up of a (new) job or retirement. Furthermore, changes in household composition (e.g. a child moving out or a couple separating) may also result in income changes. All these changes are reflected in the dynamic purchasing power development.
For 2021, purchasing power was calculated for the same group of people as in 2020.
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