Translation of "Exigencia" in English

Entiendo que no todos podríamos seguir el ritmo de tal exigencia,

I understand that perhaps not all of us may be able to keep up with such a demand,

La exigencia del petróleo ha permanecido ininterrumpido por décadas y Arabia Saudita ha cosechado las recompensas de ella.

Demand for oil has remained solid for decades and Saudi Arabia reaped the rewards of that.