How is the whale population changing?

The global whale population decreased from the heydays of Whaling, conducted by

Britain, United States, Norway, even Australia in the late 1800s to the early 1900s

by 70-80%. The IWC, International Whaling Commission put in place a gobal moratorium on comercial whaling in 1982. Since then certain species are believed to have recovered in great numbers, such as Minke Whales, while other species, such as Blue Whales remain on the endangered list.