The graph below shows changes in the share of vehicle registrations of the three most common types of commercial vehicles in the US between 1970 and 2010.

The line graph demonstrates the rate of vehicle registration of commercial vehicle types from 1970 to 2010.

Overall

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, three vehicles went

through

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up and down during the period presented in the graph. Looking at the graph more closely,

it is clear that

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truck

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trucks

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dominates

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dominated

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except around

year

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the year

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of

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1980.

Truck

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The truck

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was almost at 50 in 1970 and started to drop substantially by 20% in 1980. And

then

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, it rose gradually and reached

to

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around 45% in 2010.

In contrast

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,

taxi

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taxis

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experienced more fluctuations during the period. It soared by approximately 10% from 1970 during a decade. After peaking at about 35% in 1980, it decreased gradually

,

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but skyrocketed again to the peak of 35%.

Last

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,

bus

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the bus

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had the weakest volume

in

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of

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three

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the three

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types of vehicles. It increased from 5% in 1970 to nearly 15% in 1980.

However

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, it ended up declining and reached

to

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almost zero in 2010.