Year Weekly Hours Hourly Earnings Weekly Hours Hourly Earnings, 1900 53.0 50.341 62.1 SO, 152 1910 50.1 50.403 59.8 $0.188 1920 45.7 50.884 53.5 50.561 Source Material Statistics of the United States. Colonial Times to 1970 1. According to the table above, make a generalization on union membership between the years of 1900 and 1920