The given bar graph shows the information about the productivity change in the nonfarm business sector from 1947 to 2017. To begin with, we can see that the highest number goes to 1947-73 with the figure of 2.8% per year. According to this graph, the lowest number goes to 1973-79 and 2007-17 with the figure of 1.2% per year. Last but not the least, for the rest of the years the numbers are ranging from 1.5% to 2.6% per year. Last but not the least, for the rest of the years the numbers are ranging from 1.5% to 2.6% per year.