填空题

填空题 Track sales hardly changed throughout the period, except for a slight fall in 2004.

填空题 A steady increase in the sale of Tracks during 2006 followed a sharp decrease in 2005.

填空题 After a sharp rise, there was no change in Track sales for the rest of the period.

填空题 Track sales decreased steadily from 2004 to 2006.

填空题 Track sales fell in 2005 but rose again in 2006, higher than previous two years.