Has the number of chips produced from a single wafer (assuming same wafer size) changed from what they call 5nm to 2nm? Most companies target the same die size

Has the number of chips produced from a single wafer (assuming same wafer size) changed from what they call 5nm to 2nm? Most companies target the same die size across generations. For example, AMD CCDs have been close to 80 mm2 for three generations and Apple keeps the A-class die size around 100 mm2.