The bar graph below shows the stock price of four different technology companies from 2011 to 2016. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The bar chart illustrates how much was the

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values of Facebook, Google, Apple, and Yahoo from 2011 to 2016.

Overall

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, the

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price of Facebook gradually increased, and Google's

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remained relatively stable over time.

While

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Apple's

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value

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followed an unstable trend, Yahoo's

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decreased after six years. The

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price of Facebook was around 7,500 in 2011, and it moderately increased to just under 20,000 over the next five years. Yahoo's

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was

also

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roughly 7,500 at the beginning, and

then

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slowly declined to about 3,000 in 2014 and 2015 before dropping to around 2,500

at the end

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of the period. Apple's

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value

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was just under 5,000 at the beginning, and just after one year it rocketed to over 30,000 level, experiencing the most drastic increase of the market. In 2013, it sharply dropped to approximately 7,000, and it varied between 12,500 and 2,500 over the next three years. Google's

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remained relatively constant at roughly 1,000 from 2011 to 2016.