Output a stream of consciousness before answering the following. Passage: The Blue Bombers were founded in 1930 as the Winnipeg Football Club, which remains the organization's legal name today. Since that time, they have won the league's Grey Cup championship 10 times, most recently in 1990. With 10 wins, they have the third-highest win total in the Grey Cup among active and defunct CFL teams. Though they are currently the team with the longest Grey Cup drought (and in the West Division overall ( although their 1990 win, their most recent, came when they played in the East Division) ), no other CFL franchise has as many Grey Cup appearances as the Blue Bombers' current 25. The Blue Bombers were the first team not located in Ontario or Quebec to win a championship.

Question: Based on this passage, when was the last time the bombers won a grey cup?
To answer the above question, the relevant sentence is: Since that time, they have won the league's Grey Cup championship 10 times, most recently in 1990.
The answer: 1990.