Breaking down the male participation rate by age bracket shows a marked decline in participation among men 55 and over from approximately 71% in 1948 to 44% in 2005 .
Truy cập 17 tháng 6 năm 2007. ^ Breaking down the male participation rate by age bracket shows a marked decline in participation among men 55 and over from approximately 71% in 1948 to 44% in 2005 .