Table:
text: North American Soccer League (1968–84)
By year
By year
Year_ Winner_number_of_titles Runners_up Top_Team_in_Regular_Season_points Top_Scorer_points Winning_Coach
1974 Los Angeles Aztecs (1) Miami Toros Los Angeles Aztecs (110 points) Paul Child Alex Perolli
1975 Tampa Bay Rowdies (1) Portland Timbers Portland Timbers (138 points) Steve David Eddie Firmani
1976 Toronto Metros-Croatia (1) Minnesota Kicks Tampa Bay Rowdies (154 points) Giorgio Chinaglia Domagoj Kapetanović
1977 New York Cosmos (2) Seattle Sounders Fort Lauderdale Strikers (161 points) Steve David Eddie Firmani
1978 New York Cosmos (3) Tampa Bay Rowdies New York Cosmos (212 points) Giorgio Chinaglia Eddie Firmani
1979 Vancouver Whitecaps (1) Tampa Bay Rowdies New York Cosmos (216 points) Oscar Fabbiani Tony Waiters
1980 New York Cosmos (4) Fort Lauderdale Strikers New York Cosmos (213 points) Giorgio Chinaglia Hennes Weisweiler & Yasin Özdenak

Question: If the runner-up is the Fort Lauderdale Strikers, what is the winner (number of titles) in the North American Soccer League (1968–84) per year?