The line graph illustrates the changes of the unit sales of five different types of jams, namely strawberry, raspberry, plum, cherry, and grape in one company between 2009 and 2014.
Overall, most of the unit sales of all types of jam revealed an upward trajectory, except for the plum, which underwent a significant decrease. Additionally, despite fluctuations among all types of jam sales, strawberry was always a full-time leader throughout the period.
Looking first at the strawberry, raspberry and grape, they witnessed a stable increase. Commencing in 2009, strawberry was around 3.5 million, then rose gradually to 4 million in the following year before surging to approximately 6.5 million in 2014. Meanwhile, the sales of rasberry and grape underwent a similar trend. In 2009, the incomes of rasberry and grape were 2.8 million and 1 million, respectively. Afterwards, both of them climbed significantly, as the rasberry rocket to roughly 5.1 million and the grape also reached its peak of 4.2 million.
By contrast, while the plum always plummeted dramatically during the timeframe, the cherry showed a narrower pattern but still increase slightly in the final year. Starting at 2.7 million in 2009, the sales of plum fell dramatically and hit the low of merely 0.1 millions. As for the cherry jam sales, they commenced at 1.7 million in 2009, then slightly rose to 2.6 million in 2011 before decreasing to 2 million. They subsequently bounced back to 2.9 million in 2013, although experiecing a marginally dip in the final year, which made the cherry jam sales ended at 3.5 million.