Yemen has a population of 25 million that is growing rapidly due to a high fertility rate of 4.4 children per woman. However, Yemen's food supply cannot keep up with this growth because agricultural methods are primitive, water is scarce, and much of the available land is used to grow the narcotic leaf qat rather than food. As a result, 26% of Yemen's population is undernourished. The country also relies heavily on food imports and revenues from oil exports, but oil exports have declined due to attacks on pipelines. The government is implementing a National Food Security Strategy to increase food security and decrease dependence on qat and oil by 2020, but Yemen faces significant challenges in improving agriculture and reducing poverty.