Khat is very popular in Yemen. Much of the country's farming resources go towards it. It is estimated that 40% of the country's water supply goes towards irrigating it. Its production is said to increase by about 10% to 15% every year. Water use in producing khat is so high that groundwater levels in the Sana'a basin are getting lower. For this reason, government officials have proposed to move large portions of the population of Sana'a to the coast of the Red Sea. 