However, this economic growth has not reduced unemployment or ameliorated social and economic inequalities to the desired levels. According to the preliminary Namibia Household Income and Expenditure Survey 2015/16, poverty in Namibia fell from 28.7% in 2009/10 to 18% in 2015/16. This is partly because the economy depends heavily on the mining sector which does not demand a large number of unskilled laborers. As a result, the majority of Namibia's workers who lack advanced skills or education must rely on subsistence agriculture for their livelihood. In the year 2014, 31% of Namibian work force worked in agriculture sector which contributed only 3.9% of the GDP. While drought and declines in prices on the global market are partly responsible for agriculture's relatively small contribution to Namibia's GDP, a lack of modernization in farming techniques and a lack of infrastructure in business development have made the agriculture sector efficient, less robust and less profitable than it would otherwise be. The relatively low job growth compared to the growth rate of the labour force has made Namibia one of the most unequal countries in the world, with a Gini coefficient of 0.57. These social and economic inequalities pose a threat to the nation's macroeconomic and fiscal stability. It is therefore essential for Namibia to address the skill deficits in its labor force so that more Namibians can obtain a living wage. Methods to achieve this goal include improving the quality of the educational system, including adult education and training opportunities. At the same time, Namibia will endeavor to upgrade and diversify its range of productive industries. 2.1 Performance of Industries The graph below illustrates the vulnerability and resilience of each industrial tier to drought and/or global economic slowdowns. In 2016, the Namibian economy slowed down to 0.2% growth from 6.1% in 2015. The slowdown is attributable to contractions within the primary and secondary industries. A three-year long drought that lasted between 2013 and 2016 led to low production in both the crop and livestock farming subsectors. The crop subsector was also heavily impacted as most farmers (commercial and subsistence) did not cultivate at full capacity. Livestock farming contracted by 13% in 2015 from a positive of 13.9% in 2014 due to foot and mouth disease outbreak and fluctuations in prices of cattle and small livestock. Tertiary industries slowed down to 3.4% in 2016 from 7.