What percentage of nhl hockey players are canadian?
No context provided
What percentage of nhl hockey players are canadian in the 1980s?
75
No context provided
What percentage of nhl hockey players are canadian in approximately 2017?
slightly less than 50
Race and ethnicity in the NHL
https://en.wikipedia.org/wiki/Race%20and%20ethnicity%20in%20the%20NHL
The National Hockey League (NHL) evolved from a mono-ethnic and primarily Canadian professional athletic league to span North America.[1][2][3][4][5] The distribution of ethnic groups has been gradually changing since the inception of the NHL.[6] The league consists of a variety of players from varying nationalities and diverse backgrounds. 
Race and ethnicity in the NHL
The NHL began its expansion of player nationalities in the 1970s, when players hailed from the United States, Sweden, and Finland.[8] The share of Canadians in the league dropped to 75% by the 1980s and is now slightly less than 50%.[8]
Race and ethnicity in the NHL
The National Hockey League (NHL) evolved from a mono-ethnic and primarily Canadian professional athletic league to span North America. The distribution of ethnic groups has been gradually changing since the inception of the NHL. The league consists of a variety of players from varying nationalities and diverse backgrounds. The NHL began its expansion of player nationalities in the 1970s, when players hailed from the United States, Sweden, and Finland. The share of Canadians in the league dropped to 75% by the 1980s and is now slightly less than 50% as of 2017.