Kenya has the largest and most diverse economy in Southeast and Central Africa, growing at an average rate of over 5% a year for nearly a decade. Agriculture is a major employer and the country traditionally exports tea and coffee, and more recently fresh flowers to Europe. The service industry is the major economic driver, boosted by rapid expansion in tourism, telecommunication and financial activity over the last decade, and now contributes 62% of GDP. As a result poverty is declining, though inequality remains high. Progress on the Millennium Development Goals is patchy. Weak areas are maternal and child health, although Kenya is on course to achieve universal primary education due to the introduction of the free public primary education, and is also making promising advances in combating HIV/AIDS, malaria, and other diseases. The Human Development Index (HDI) of 0.519, ranks the country at 145 out of 187. About 25% of Kenyans do not have enough income to meet their Basic food needs. Kenya is also particularly vulnerable to the impacts of climate change, with increasingly frequent droughts and floods.