Our official gvmtl. statistics basically say 6% price increase for a total of 5 years making 0.83% yearly price increase.
In order to verify this I have compiled prices for a couple of articles, mainly using https://www.discounter-preisvergleich.de as a source of reference for historical prices.
Products always relate to the cheap private label (store) brand at ALDI. Together with LIDL, ALDI frequently acts are point of reference for all other discounters.
These are the results:
| Description of product | Years available | Price increase p.a. |
| Rapeseed cooking oil | 12.3 | 1.34% |
| Gouda middle ages in one piece | 13.1 | 0.66% |
| Free range eggs, 10 pcs | 15.7 | 7.98% |
| Basmati rice, 1 kg | 10.8 | 1.04% |
| Whole grain pasta, 500g | 11.4 | -0.44% |
| Beer 6x 0.5L | 11.4 | 0.52% |
| Tuna own juice | 14.9 | 4.85% |
| Fresh whole milk 3.5% | 11.4 | 1.13% |
| Olives in a jar | 9.4 | 0.00% |
| Peanuts 200G | 12.9 | 4.75% |
| Low-fat yogurt 500G | 14.3 | 1.80% |
| Fresh organic / milk 1.5% | 7.2 | 1.57% |
| Average | 13.2 | 2.29% |
An average yearly increase of 2.3% during the last 13 years, which is definitely above the official 0.83% for the last 5 years. The Corona effect is however only included in the Olives/Peanuts/Yogurt/1.5% milk dataset, since I had only for these 5 products prices available dating past March 2020. However even for those produce, price movement post COVID is little to none.
What I did not get the chance to validate and where I think biggest price jumps should be are fresh produce. During my search I could not discover a valid source of historical data which is available online.
