The income gap between the richest Canadians and the rest tax filers in the country has widened over time, according to a study released Monday by Statistics Canada.

In 1982, the median income of the top 1 percent of tax filers was 191,600 Canadian dollars, which was seven times higher than the median income of 28,000 Canadian dollars for the other 99 percent of filers. However, by 2010, the figure increased to 283,400 Canadian dollars, about 10 times higher than the median income of 28,400 Canadian dollars for the rest.

According to the study, the top 1 percent of Canada's 25.5 million tax filers accounted for 10.6 percent of the nation's total income in 2010. Although the proportion is down from a peak of 12.1 percent in 2006, it is up from the 7.0 percent in the early 1980s.

Statistics Canada said that a tax filer required an annual income of 201,400 Canadian dollars to be in the top 1 percent in 2010, 37 percent higher than the threshold value of 147,500 Canadian dollars in 1982.

The income of top filers was increasingly dependent on their jobs, rather than on investments. In 1982, just over half of the total income of men in the top 1 percent came from wages and salaries. By 2000, this had increased to 67 percent.

Meanwhile, the richest 1 percent of filers were paying more income taxes. In 2012, they paid 21.2 percent of federal and provincial or territorial income taxes, up from the proportion of 13.4 percent in 1982.