Oman, in 2018 had a budget deficit of 32 percent of total revenue and a government debt to GDP of 47.5 percent. Oman's military spending to GDP between 2016 and 2018 averaged 10 percent, while the world's average during the same period was 2.2 percent. Oman's health spending to GDP between 2015 and 2016 averaged 4.3 percent, while the world's average during the same period was 10 percent. Oman's research and development spending between 2016 and 2017 averaged 0.24 percent, which is significantly lower than the world's average (2.2 percent) during the same period. Oman's government spending on education to GDP in 2016 was 6.11 percent, while the world's average was 4.8 percent (2015).