Anything wrong with "contribute" in the following sentence? If not, does it mean "make up"?
India is a country with 1.2 billion people, of whom 30% still live in poverty, and 56% of the workforce is engaged in agriculture even though it contributes only 18% of GDP.

Question

Anything wrong with "contribute" in the following sentence? If not,  does it mean "make up"?
India is a country with 1.2 billion people, of whom 30% still live in poverty, and 56% of the workforce is engaged in agriculture even though it contributes only 18% of GDP.

Answer

Contributes is better.

You **COULD** use "makes up" and the meaning would still be perfectly clear.  I think 'contributes' is more appropriate and slightly more formal for this topic.

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The sentence is ok. Contribute is perfect for the context.To contribute means to support, help or assist. Make up is more like how something is/was done/created.

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This looks fine.  It is structured properly & the meaning is crystal clear.
contribute = give, donate, provide, supply, furnish

Answer

"Contribute" here means "is responsible for."

Agriculture contributes 18%.
Agriculture is responsible for 18%.

Both mean that only 18% of GDP comes from agriculture.