The table below shows the production of milk annually in four countries in 1990, 2000 and 2010.

The table below shows the production of milk annually in four countries in 1990, 2000 and 2010.

The table compares the average amounts of milk produced in four countries in the years 1990,2000,2010.

Over all, Netherlands was the biggest milk producer among the four nations, its general production of milk surpassed others each years.While Guatemala had a minimal production of milk, with only a half of the amount compare with the second small producer Tanzania in 2010.

Netherlands and Australia contributed the most in milk industry.
Despite fluctuation in 2000, the total amount increased in Netherlands and reached 11million litres in 2010, which was more than the whole number add up
by other countries.As for Australia ,it was the only country that the production dropped( from 11 million to 9 million litres ) over the 20-year period.

Although having a small milk industry，the production in Tanzania and Guatemala increased steadily，with over two- fold( from 87 thousand to 155 thousand litres )and three – fold (from 26 thousand to 84 thousand litres )raised respectively.