the absolute global sea level rise is believed to be 1.7-1.8 millimeters/year

Source here.

This is equivalent to 1.8 centimeters per decade (about 2/3 of an inch)

This is equivalent to 18 centimeters per century (about 7 inches)

That trend is believed to have begun a while ago.

In other news, my students are being told to, “not listen to half of what economists say.” That’s professional.