That's a cost of living index. Switching from COGI to COLI would be fraught with political nooses for a politician to hang themself with. If the switch were to

That's a cost of living index. Switching from COGI to COLI would be fraught with political nooses for a politician to hang themself with. If the switch were to happen poor people might take more notice of how badly they're being taken advantage of by the Company Store known as the stock market when they can point to the cost of living index and ask why the COLI went up 30% and they got a 0.5% raise.