Industry is the second-largest sector of the economy, accounting for 19.74% of gross domestic product (GDP), and 24 percent of total employment. Large-scale manufacturing (LSM), at 12.2% of GDP, dominates the overall sector, accounting for 66% of the sectoral share, followed by small-scale manufacturing, which accounts for 4.9% of total GDP. Pakistan's cement industry is also fast growing mainly because of demand from Afghanistan and from the domestic real estate sector. In 2013 Pakistan exported 7,708,557 metric tons of cement. Pakistan has an installed capacity of 44,768,250 metric tons of cement and 42,636,428 metric tons of clinker. In 2012 and 2013, the cement industry in Pakistan became the most profitable sector of the economy.