Table:
text: List of tallest buildings in San Diego
Tallest buildings
Tallest buildings
Rank_ Name_ Height_feetm Floors Year_
24 Imperial Bank Tower 355 (108) 24 1982
25 Executive Complex 350 (107) 25 1963
26 AT&T Building 348 (106) 20 1982
27 Comerica Bank Building 339 (103) 23 1974
28 U.S. Federal Courthouse 333 (101) 16 2012
29 Wells Fargo Plaza 331 (101) 23 1984
30 El Cortez Apartment Hotel 310 (94) 16 1927
31 NBC Building 306 (93) 22 1975

Question: Ranked 31st, what is the year in the list of tallest buildings in San Diego?