What has happened to the global sea level over past century?

The global mean sea level has been rising during the 20th century. Observations taken during this time frame revealed an averaged sea level rise between 1.2 – 1.9 mm/year.

Over past decade, between years 1993 - 2014 , the rate increased between to approximately 3.3 mm/year, as estimated trough satellite altimetry measurements.