The two major influences in the declines among the largest Protestant denominations have been immigration and the fact that there are fewer young people reporting these denominations.
Since 1961, the proportion of immigrants entering Canada who were Protestant has declined steadily. Protestants represented four out of every 10 immigrants (39%) who came to Canada prior to 1961. This ratio declined to one in 10 (11%) among those who arrived during the 1990s.