You have 16 years of education with Masters Degree = 22. ( my personal opinion only), you would get 25 if its 17 year of education with master degree. I am not sure value of other diplomas that you have.
Look bellow
Education Maximum
25 points
You have a master’s degree or PhD and at least 17 years of full-time or full-time equivalent study. 25 points
You have two or more university degrees at the bachelor’s level and at least 15 years of full-time or full-time equivalent study. 22 points
You have a three-year diploma, trade certificate or apprenticeship and at least 15 years of full-time or full-time equivalent study. 22 points
You have a university degree of two years or more at the bachelor’s level and at least 14 years of full-time or full-time equivalent study. 20 points
You have a two-year diploma, trade certificate or apprenticeship and at least 14 years of full-time or full-time equivalent study. 20 points
You have a one-year university degree at the bachelor’s level and at least 13 years of full-time or full-time equivalent study. 15 points
You have a one-year diploma, trade certificate or apprenticeship and at least 13 years of full-time or full-time equivalent study. 15 points
You have a one-year diploma, trade certificate or apprenticeship and at least 12 years of full-time or full-time equivalent study. 12 points
You completed high school. 5 points