Graphs: Preposition Quiz How well do you know the prepositions used in writing about graphs? Try this quiz. Back to Links Click to see answers Sales peaked at 2,000,000 in 1999. Profits rose from a low of 4.5 million to a high of 8 million. Sales fluctuated between 5 million and 6 million. Profits fell by 10%, from 2000 to 1800. The number of students fell to a low of 1800 in 2003. Cases of HIV shot up from 2400 in 1996 to 4000 in 2003. The number of cars sold remained unchanged in 1999, at three million. Students do between three and four hours homework a night. The number of accidents in 1999 was slightly higher than in 2000. The figure rose steadily during the four years between 1997 and 2001.