Between 1961 and 2008, productivity in Canada rose 2.0 percent a year on average, compared with 2.3 percent in the United States and in recent years, the gap in productivity growth between the two countries has steadily widened. From 2000 to 2008, labour productivity in Canada increased at less than one-third of the pace in the United States.
Explain the sources of labour productivity growth that might account for the trends described in the news clip.