The economy of Syria is based on agriculture, oil, industry and services. Its GDP per capita expanded 80% in the 1960s reaching a peak of 336% of total growth during the 1970s. This proved unsustainable for Syria and the economy shrank by 33% during the 1980s. However the GDP per capita registered a very modest total growth of 12% (1.1% per year on average) during the 1990s due to successful diversification. More recently, the International Monetary Fund (IMF) projected real GDP growth at 3.9% in 2009 from close to 6% in 2008. The two main pillars of the Syrian economy used to be agriculture and oil, which together accounted for about one-half of GDP. Agriculture, for instance, accounted for about 25% of GDP and employed 25% of the total labor force. However, poor climatic conditions and s