I suspect you are talking about per capita energy usage. Per capita energy usage has stayed around 80 mWh per person since 1965 in the US.
But what's important isn't the per-capita usage, but aggregate usage. Because guess what, the climate doesn't care about per-capita CO2.
You have to look at it from a system level, not individual actor level. Our whole political and economic system is designed to have exponential GDP growth. And because energy is a limiting factor in GDP growth, then our whole political and economic system is designed to extract as much energy as possible to keep growth from hitting that limit.