Import dropping for no particular reason

I'm playing the Import/export campain mission in Tropico 4, and I've noticed from 1962, my import volume is dropping. And the export volume is also dropping since I export only industrialized/transformed products after importing them.

Why is that and what can I do to get back my export revenues ?

I have checked every indicators : all my factions are around 100%, my 2 docks are up and running, my relationships with nations is mostly above 90% and always above 50%, and of course all imports are authorized (coffee for box of coffees and tobacco for cigars).

Is it just a bug ?

Note : a few moments later (~= 3 ingame years), imports and exports are back for no particular reason and no action from me. I like Tropico but I don't like this kind of random behaviors, can "drought" be responsible for this ?

tropico-4

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What happens if imports exceed exports?

If a country imports more than it exports, it runs a trade deficit. If it imports less than it exports, that creates a trade surplus. When a country has a trade deficit, it must borrow from other countries to pay for the extra imports. 2 It's like a household that's just starting out.

Why is importing bad for the economy?

Penalizing imports creates inefficiency and adds costs to domestic producers who rely on imported goods for their businesses. Short-term gains will not guarantee long-term benefits for an individual economy, nor shared prosperity from open trade.

What is the impact of imports and exports?

A country's importing and exporting activity can influence its GDP, its exchange rate, and its level of inflation and interest rates. A rising level of imports and a growing trade deficit can have a negative effect on a country's exchange rate.

What are the main reasons companies import goods?

Increase your profit margins A big reason why companies choose to import goods is to extend their profit margin. The low material costs in foreign countries can make it more useful to import products from there. Certain products can cost upwards of 50% less to grow, manufacture or produce abroad.

The Most Common Import issue in Intro to Python Classes

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