rice of a barrel of crude oil which was US$ 96 in 2014 and it is only US$ 40 at present.
Price of a ton of wheat which was US$ 230 in 2014 is only US$ 165 at present.
Price of a ton of milk powder which was more than US$ 5000 in 2014 is only US$ 2000 at present.
Price of a ton of sugar which...