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During the inflationary phase of last year, prices in subindex 4 rose the most of all. The inflation rate here was 13.9%, more than 5 percentage points above the official average inflation. That the Federal Statistical Offices have now decided to lower the weight of this subindex has one practical effect: the officially measured inflation will be lower. But it measures past reality.

https://mises.org/power-market/playing-official-inflation-statistics-example-germany

Karl-Friedrich Israel

The Harmonized Index of Consumer Prices (HICP) consists of 12 subindices, which are weighted according to their shares in total household expenditures. If, for example, food and non-alcoholic beverages (subindex 1) account for 15% of expenditures, they should also be given a weight of 15% in the overall index. In this way, each expenditure category would be given the importance it has for an average household. This is the claim of official statistics. But here, too, as so often, aspiration and reality diverge.

In Germany, the traditionally largest subindex covers housing, water, electricity, gas and other fuels (subindex 4). It has always accounted for more than 21% of the overall index since the mid-1990s. Between 2020 and 2022, the weight had increased to slightly more than 25%. The official statistics thus assumed that German households spend on average around a quarter of their total expenditure on goods of this category. This is too little in the eyes of some critics. Many households spend significantly more on goods of this type. In larger urban areas, households often spend more than a third of their income on rent alone.

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