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Key Observations from the High-Resolution Chart
- Basic Foodstuffs Curve: Demonstrates rapid initial growth from £0 support up to ~£1,500/month, followed by a flattening slope as consumption reaches the biological saturation threshold of ~£550/month (Engel's Law).
- Mid-Size Vehicle Acquisition Curve: Remains flat below £1,500/month due to income prioritisation on immediate necessities, followed by an S-curve demand surge between £2,000 and £4,000/month as vehicle lease and credit eligibility open up.
The Graph of Improved Activity Over One Year
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Summary of Annual Dynamics
1. Basic Foodstuffs (Annual Spending in £/year)
- Annual Scale: Income support spans from £0 to £60,000 per year (equivalent to £0 to £5,000/month).
- Initial Uptake: Rises rapidly from baseline subsistence (~£1,200/year) as essential food intake needs are met.
- Biological Saturation: As annual support approaches £30,000–£40,000/year, spending levels off and saturates at ~£6,600 per year (~£550/month), following Engel’s Law.
2. Mid-Size Vehicles (Annual Household Acquisitions per 100 Households)
- Threshold Lag (£0 – £18,000/year): Annual acquisitions remain near zero when income support is below £18,000/year (£1,500/month) as funds go toward survival necessities.
- Acquisition Inflexion (£24,000 – £48,000/year): Passing £24,000/year unlocks financing and lease eligibility, causing a steep acceleration in vehicle acquisitions up to 30–35 acquisitions per 100 households per year (a standard 3-to-4-year vehicle replacement cycle).
- Plateau Phase (£50,000–£60,000/year): Vehicle renewal reaches household fleet capacity or shifts toward luxury segment upgrades.
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