Table:
text: List of tallest buildings in the Halifax Regional Municipality
Tallest buildings
Buildings completed as of February, 2011
Rank_ Building Height Floors Completed
12 Founders Square (Office) 71m (233ft) 15 1970
13 Tupper Building (Educational) 70m (233ft) 16 1967
14 Park Victoria (Residential) 70m (233ft) 21 1969
15 Summer Gardens (Residential) 70m (233ft) 21 1990
16 Loyola Residence Tower (Residential) 67m (220ft) 22 1971
17 Metropolitan Place (Office) 67m (218ft) 16 1987
18 Bank of Commerce (Office) 66m (217ft) 16 1977
19 The Trillium (Residential) 65m (213ft) 19 2011

Question: In the list of tallest buildings in the Halifax Regional Council completed as of February 2011, what is the greatest number of stories in the 70 m (233 ft) Tupper Building (educational building)?