Original unibody Macbook Pros were 2.5cm (0.98 in) thick.

Retina Macbook Pros were 1.7cm (0.71 in) thick.

Touchbar Macbook Pros, 1.55 cm (0.61 in) thick.

And they "made it thicker". They are now a whopping 1.62cm (0.64 in) thick.